/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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 03:00:38,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 03:00:38,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 03:00:38,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 03:00:38,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 03:00:38,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 03:00:38,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 03:00:38,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 03:00:38,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 03:00:38,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 03:00:38,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 03:00:38,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 03:00:38,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 03:00:38,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 03:00:38,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 03:00:38,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 03:00:38,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 03:00:38,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 03:00:38,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 03:00:38,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 03:00:38,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 03:00:38,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 03:00:38,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 03:00:38,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 03:00:38,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 03:00:38,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 03:00:38,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 03:00:38,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 03:00:38,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 03:00:38,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 03:00:38,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 03:00:38,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 03:00:38,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 03:00:38,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 03:00:38,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 03:00:38,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 03:00:38,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 03:00:38,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 03:00:38,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 03:00:38,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 03:00:38,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 03:00:38,102 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 03:00:38,134 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 03:00:38,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 03:00:38,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 03:00:38,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 03:00:38,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 03:00:38,136 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 03:00:38,136 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 03:00:38,136 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 03:00:38,136 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 03:00:38,137 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 03:00:38,137 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 03:00:38,138 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 03:00:38,138 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 03:00:38,138 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 03:00:38,138 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 03:00:38,138 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 03:00:38,138 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 03:00:38,138 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 03:00:38,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 03:00:38,139 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 03:00:38,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 03:00:38,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 03:00:38,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 03:00:38,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 03:00:38,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 03:00:38,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 03:00:38,140 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 03:00:38,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 03:00:38,140 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 03:00:38,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 03:00:38,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 03:00:38,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 03:00:38,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 03:00:38,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 03:00:38,141 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 03:00:38,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 03:00:38,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 03:00:38,142 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 03:00:38,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 03:00:38,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 03:00:38,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 03:00:38,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 03:00:38,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 03:00:38,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 03:00:38,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 03:00:38,407 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 03:00:38,408 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 03:00:38,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2023-04-03 03:00:39,552 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 03:00:39,901 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 03:00:39,901 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2023-04-03 03:00:39,924 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dacd26879/968c5cde5d4341c8b4499d63dd4c5f9c/FLAGad418d8a4 [2023-04-03 03:00:39,939 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dacd26879/968c5cde5d4341c8b4499d63dd4c5f9c [2023-04-03 03:00:39,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 03:00:39,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 03:00:39,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 03:00:39,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 03:00:39,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 03:00:39,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 03:00:39" (1/1) ... [2023-04-03 03:00:39,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e83868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:39, skipping insertion in model container [2023-04-03 03:00:39,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 03:00:39" (1/1) ... [2023-04-03 03:00:39,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 03:00:40,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 03:00:40,338 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[18857,18870] [2023-04-03 03:00:40,369 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[25957,25970] [2023-04-03 03:00:40,381 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[29482,29495] [2023-04-03 03:00:40,393 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32880,32893] [2023-04-03 03:00:40,411 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[36938,36951] [2023-04-03 03:00:40,433 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[40412,40425] [2023-04-03 03:00:40,456 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[43977,43990] [2023-04-03 03:00:40,482 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[47412,47425] [2023-04-03 03:00:40,492 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[51091,51104] [2023-04-03 03:00:40,516 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[54693,54706] [2023-04-03 03:00:40,525 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[58222,58235] [2023-04-03 03:00:40,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 03:00:40,589 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 03:00:40,694 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[18857,18870] [2023-04-03 03:00:40,708 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[25957,25970] [2023-04-03 03:00:40,726 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[29482,29495] [2023-04-03 03:00:40,736 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32880,32893] [2023-04-03 03:00:40,758 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[36938,36951] [2023-04-03 03:00:40,765 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[40412,40425] [2023-04-03 03:00:40,795 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[43977,43990] [2023-04-03 03:00:40,817 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[47412,47425] [2023-04-03 03:00:40,827 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[51091,51104] [2023-04-03 03:00:40,844 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[54693,54706] [2023-04-03 03:00:40,852 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[58222,58235] [2023-04-03 03:00:40,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 03:00:40,888 INFO L208 MainTranslator]: Completed translation [2023-04-03 03:00:40,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:40 WrapperNode [2023-04-03 03:00:40,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 03:00:40,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 03:00:40,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 03:00:40,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 03:00:40,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:40" (1/1) ... [2023-04-03 03:00:40,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:40" (1/1) ... [2023-04-03 03:00:40,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:40" (1/1) ... [2023-04-03 03:00:40,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:40" (1/1) ... [2023-04-03 03:00:41,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:40" (1/1) ... [2023-04-03 03:00:41,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:40" (1/1) ... [2023-04-03 03:00:41,035 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:40" (1/1) ... [2023-04-03 03:00:41,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:40" (1/1) ... [2023-04-03 03:00:41,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 03:00:41,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 03:00:41,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 03:00:41,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 03:00:41,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:40" (1/1) ... [2023-04-03 03:00:41,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 03:00:41,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 03:00:41,091 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-03 03:00:41,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-03 03:00:41,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 03:00:41,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 03:00:41,135 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 03:00:41,135 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 03:00:41,135 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 03:00:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 03:00:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 03:00:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 03:00:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 03:00:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 03:00:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 03:00:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 03:00:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 03:00:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 03:00:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 03:00:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 03:00:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 03:00:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 03:00:41,138 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 03:00:41,138 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 03:00:41,138 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 03:00:41,138 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 03:00:41,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 03:00:41,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 03:00:41,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 03:00:41,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 03:00:41,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 03:00:41,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 03:00:41,379 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 03:00:41,381 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 03:00:42,565 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 03:00:42,650 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 03:00:42,650 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 03:00:42,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 03:00:42 BoogieIcfgContainer [2023-04-03 03:00:42,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 03:00:42,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 03:00:42,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 03:00:42,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 03:00:42,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 03:00:39" (1/3) ... [2023-04-03 03:00:42,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7a1d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 03:00:42, skipping insertion in model container [2023-04-03 03:00:42,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:40" (2/3) ... [2023-04-03 03:00:42,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7a1d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 03:00:42, skipping insertion in model container [2023-04-03 03:00:42,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 03:00:42" (3/3) ... [2023-04-03 03:00:42,663 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2023-04-03 03:00:42,679 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 03:00:42,679 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-04-03 03:00:42,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 03:00:42,745 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;@322dab08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 03:00:42,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-04-03 03:00:42,753 INFO L276 IsEmpty]: Start isEmpty. Operand has 557 states, 541 states have (on average 1.7818853974121995) internal successors, (964), 552 states have internal predecessors, (964), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-03 03:00:42,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-03 03:00:42,768 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:42,768 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] [2023-04-03 03:00:42,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr7ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:42,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:42,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1547624305, now seen corresponding path program 1 times [2023-04-03 03:00:42,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:42,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684032998] [2023-04-03 03:00:42,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:42,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:43,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:00:43,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:43,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684032998] [2023-04-03 03:00:43,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684032998] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:43,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:43,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:00:43,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824630893] [2023-04-03 03:00:43,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:43,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:00:43,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:43,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:00:43,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:00:43,500 INFO L87 Difference]: Start difference. First operand has 557 states, 541 states have (on average 1.7818853974121995) internal successors, (964), 552 states have internal predecessors, (964), 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 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:43,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:43,862 INFO L93 Difference]: Finished difference Result 650 states and 1099 transitions. [2023-04-03 03:00:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:00:43,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 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 63 [2023-04-03 03:00:43,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:43,873 INFO L225 Difference]: With dead ends: 650 [2023-04-03 03:00:43,874 INFO L226 Difference]: Without dead ends: 369 [2023-04-03 03:00:43,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:00:43,880 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1765 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1765 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:43,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1765 Valid, 441 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:00:43,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-04-03 03:00:43,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2023-04-03 03:00:43,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 355 states have (on average 1.2394366197183098) internal successors, (440), 365 states have internal predecessors, (440), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:43,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 443 transitions. [2023-04-03 03:00:43,937 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 443 transitions. Word has length 63 [2023-04-03 03:00:43,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:43,937 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 443 transitions. [2023-04-03 03:00:43,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:43,938 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 443 transitions. [2023-04-03 03:00:43,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-03 03:00:43,940 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:43,940 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] [2023-04-03 03:00:43,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 03:00:43,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:43,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:43,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1484569249, now seen corresponding path program 1 times [2023-04-03 03:00:43,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:43,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933459635] [2023-04-03 03:00:43,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:43,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:44,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:00:44,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:44,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933459635] [2023-04-03 03:00:44,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933459635] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:44,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:44,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:00:44,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993773930] [2023-04-03 03:00:44,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:44,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:00:44,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:44,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:00:44,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:00:44,133 INFO L87 Difference]: Start difference. First operand 369 states and 443 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:44,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:44,398 INFO L93 Difference]: Finished difference Result 510 states and 617 transitions. [2023-04-03 03:00:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:00:44,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 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 63 [2023-04-03 03:00:44,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:44,400 INFO L225 Difference]: With dead ends: 510 [2023-04-03 03:00:44,400 INFO L226 Difference]: Without dead ends: 337 [2023-04-03 03:00:44,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:00:44,403 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1132 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:44,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 237 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:00:44,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-04-03 03:00:44,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2023-04-03 03:00:44,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 323 states have (on average 1.2476780185758514) internal successors, (403), 333 states have internal predecessors, (403), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:44,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 406 transitions. [2023-04-03 03:00:44,427 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 406 transitions. Word has length 63 [2023-04-03 03:00:44,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:44,428 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 406 transitions. [2023-04-03 03:00:44,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:44,428 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 406 transitions. [2023-04-03 03:00:44,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-03 03:00:44,429 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:44,430 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] [2023-04-03 03:00:44,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 03:00:44,430 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:44,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:44,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1320704191, now seen corresponding path program 1 times [2023-04-03 03:00:44,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:44,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44493929] [2023-04-03 03:00:44,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:44,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:44,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:00:44,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:44,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44493929] [2023-04-03 03:00:44,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44493929] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:44,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:44,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:00:44,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21748094] [2023-04-03 03:00:44,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:44,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:00:44,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:44,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:00:44,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:00:44,603 INFO L87 Difference]: Start difference. First operand 337 states and 406 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:44,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:44,782 INFO L93 Difference]: Finished difference Result 442 states and 531 transitions. [2023-04-03 03:00:44,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:00:44,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 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 63 [2023-04-03 03:00:44,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:44,784 INFO L225 Difference]: With dead ends: 442 [2023-04-03 03:00:44,786 INFO L226 Difference]: Without dead ends: 273 [2023-04-03 03:00:44,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:00:44,789 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 923 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:44,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 205 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:00:44,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-04-03 03:00:44,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-04-03 03:00:44,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 259 states have (on average 1.250965250965251) internal successors, (324), 269 states have internal predecessors, (324), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:44,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 327 transitions. [2023-04-03 03:00:44,819 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 327 transitions. Word has length 63 [2023-04-03 03:00:44,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:44,821 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 327 transitions. [2023-04-03 03:00:44,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:44,822 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 327 transitions. [2023-04-03 03:00:44,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-04-03 03:00:44,824 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:44,825 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] [2023-04-03 03:00:44,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 03:00:44,825 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:44,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:44,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1651845730, now seen corresponding path program 1 times [2023-04-03 03:00:44,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:44,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033497235] [2023-04-03 03:00:44,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:44,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:44,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:00:44,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:44,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033497235] [2023-04-03 03:00:44,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033497235] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:44,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:44,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:00:44,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962153517] [2023-04-03 03:00:44,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:44,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:00:44,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:44,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:00:44,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:00:44,985 INFO L87 Difference]: Start difference. First operand 273 states and 327 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:45,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:45,206 INFO L93 Difference]: Finished difference Result 515 states and 624 transitions. [2023-04-03 03:00:45,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:00:45,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (2), 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 65 [2023-04-03 03:00:45,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:45,208 INFO L225 Difference]: With dead ends: 515 [2023-04-03 03:00:45,208 INFO L226 Difference]: Without dead ends: 372 [2023-04-03 03:00:45,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:00:45,209 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 1096 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:45,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 290 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:00:45,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-04-03 03:00:45,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 326. [2023-04-03 03:00:45,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 312 states have (on average 1.294871794871795) internal successors, (404), 322 states have internal predecessors, (404), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:45,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 407 transitions. [2023-04-03 03:00:45,239 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 407 transitions. Word has length 65 [2023-04-03 03:00:45,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:45,239 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 407 transitions. [2023-04-03 03:00:45,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:45,240 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 407 transitions. [2023-04-03 03:00:45,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-03 03:00:45,241 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:45,241 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] [2023-04-03 03:00:45,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 03:00:45,241 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:45,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:45,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1453325668, now seen corresponding path program 1 times [2023-04-03 03:00:45,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:45,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436929689] [2023-04-03 03:00:45,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:45,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:45,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:00:45,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:45,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436929689] [2023-04-03 03:00:45,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436929689] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:45,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:45,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:00:45,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948336635] [2023-04-03 03:00:45,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:45,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:00:45,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:45,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:00:45,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:00:45,725 INFO L87 Difference]: Start difference. First operand 326 states and 407 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:46,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:46,415 INFO L93 Difference]: Finished difference Result 641 states and 804 transitions. [2023-04-03 03:00:46,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:00:46,416 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 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 67 [2023-04-03 03:00:46,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:46,418 INFO L225 Difference]: With dead ends: 641 [2023-04-03 03:00:46,418 INFO L226 Difference]: Without dead ends: 531 [2023-04-03 03:00:46,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:00:46,420 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 1752 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:46,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1752 Valid, 836 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:00:46,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2023-04-03 03:00:46,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 326. [2023-04-03 03:00:46,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 312 states have (on average 1.2916666666666667) internal successors, (403), 322 states have internal predecessors, (403), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:46,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 406 transitions. [2023-04-03 03:00:46,462 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 406 transitions. Word has length 67 [2023-04-03 03:00:46,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:46,462 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 406 transitions. [2023-04-03 03:00:46,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:46,462 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 406 transitions. [2023-04-03 03:00:46,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-03 03:00:46,463 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:46,463 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] [2023-04-03 03:00:46,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 03:00:46,464 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:46,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:46,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1155583748, now seen corresponding path program 1 times [2023-04-03 03:00:46,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:46,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531807102] [2023-04-03 03:00:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:46,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:46,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:00:46,829 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:46,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531807102] [2023-04-03 03:00:46,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531807102] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:46,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:46,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:00:46,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609244078] [2023-04-03 03:00:46,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:46,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:00:46,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:46,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:00:46,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:00:46,831 INFO L87 Difference]: Start difference. First operand 326 states and 406 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:47,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:47,532 INFO L93 Difference]: Finished difference Result 748 states and 951 transitions. [2023-04-03 03:00:47,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:00:47,532 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 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 67 [2023-04-03 03:00:47,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:47,535 INFO L225 Difference]: With dead ends: 748 [2023-04-03 03:00:47,535 INFO L226 Difference]: Without dead ends: 662 [2023-04-03 03:00:47,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:00:47,536 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 1576 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:47,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1576 Valid, 962 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:00:47,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2023-04-03 03:00:47,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 326. [2023-04-03 03:00:47,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 312 states have (on average 1.2884615384615385) internal successors, (402), 322 states have internal predecessors, (402), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:47,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 405 transitions. [2023-04-03 03:00:47,577 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 405 transitions. Word has length 67 [2023-04-03 03:00:47,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:47,578 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 405 transitions. [2023-04-03 03:00:47,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:47,578 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 405 transitions. [2023-04-03 03:00:47,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-03 03:00:47,579 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:47,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:00:47,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 03:00:47,579 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:47,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:47,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1230937404, now seen corresponding path program 1 times [2023-04-03 03:00:47,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:47,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7426421] [2023-04-03 03:00:47,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:47,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:00:47,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:47,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7426421] [2023-04-03 03:00:47,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7426421] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:47,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:47,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-03 03:00:47,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010983962] [2023-04-03 03:00:47,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:47,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-03 03:00:47,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:47,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-03 03:00:47,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-03 03:00:47,940 INFO L87 Difference]: Start difference. First operand 326 states and 405 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:48,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:48,370 INFO L93 Difference]: Finished difference Result 625 states and 763 transitions. [2023-04-03 03:00:48,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-03 03:00:48,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (2), 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 67 [2023-04-03 03:00:48,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:48,373 INFO L225 Difference]: With dead ends: 625 [2023-04-03 03:00:48,373 INFO L226 Difference]: Without dead ends: 466 [2023-04-03 03:00:48,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-04-03 03:00:48,375 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 1733 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:48,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1733 Valid, 433 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:00:48,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-04-03 03:00:48,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 326. [2023-04-03 03:00:48,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 312 states have (on average 1.2852564102564104) internal successors, (401), 322 states have internal predecessors, (401), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:48,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 404 transitions. [2023-04-03 03:00:48,423 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 404 transitions. Word has length 67 [2023-04-03 03:00:48,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:48,424 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 404 transitions. [2023-04-03 03:00:48,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:48,424 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 404 transitions. [2023-04-03 03:00:48,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-03 03:00:48,431 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:48,431 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] [2023-04-03 03:00:48,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 03:00:48,433 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:48,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:48,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1598437951, now seen corresponding path program 1 times [2023-04-03 03:00:48,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:48,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585558931] [2023-04-03 03:00:48,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:48,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:48,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:00:48,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:48,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585558931] [2023-04-03 03:00:48,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585558931] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:48,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:48,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:00:48,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137863958] [2023-04-03 03:00:48,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:48,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:00:48,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:48,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:00:48,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:00:48,792 INFO L87 Difference]: Start difference. First operand 326 states and 404 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:49,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:49,553 INFO L93 Difference]: Finished difference Result 716 states and 900 transitions. [2023-04-03 03:00:49,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:00:49,554 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 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 68 [2023-04-03 03:00:49,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:49,556 INFO L225 Difference]: With dead ends: 716 [2023-04-03 03:00:49,557 INFO L226 Difference]: Without dead ends: 641 [2023-04-03 03:00:49,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:00:49,558 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 1621 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:49,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 856 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:00:49,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-04-03 03:00:49,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 326. [2023-04-03 03:00:49,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 312 states have (on average 1.2820512820512822) internal successors, (400), 322 states have internal predecessors, (400), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:49,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 403 transitions. [2023-04-03 03:00:49,613 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 403 transitions. Word has length 68 [2023-04-03 03:00:49,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:49,613 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 403 transitions. [2023-04-03 03:00:49,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:49,613 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 403 transitions. [2023-04-03 03:00:49,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 03:00:49,614 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:49,614 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] [2023-04-03 03:00:49,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 03:00:49,614 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:49,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:49,615 INFO L85 PathProgramCache]: Analyzing trace with hash 842669225, now seen corresponding path program 1 times [2023-04-03 03:00:49,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:49,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156778287] [2023-04-03 03:00:49,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:49,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:49,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:00:49,984 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:49,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156778287] [2023-04-03 03:00:49,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156778287] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:49,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:49,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:00:49,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116586179] [2023-04-03 03:00:49,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:49,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:00:49,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:49,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:00:49,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:00:49,987 INFO L87 Difference]: Start difference. First operand 326 states and 403 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:50,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:50,697 INFO L93 Difference]: Finished difference Result 647 states and 805 transitions. [2023-04-03 03:00:50,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:00:50,697 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 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 69 [2023-04-03 03:00:50,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:50,700 INFO L225 Difference]: With dead ends: 647 [2023-04-03 03:00:50,700 INFO L226 Difference]: Without dead ends: 641 [2023-04-03 03:00:50,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:00:50,702 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 1617 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:50,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 881 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:00:50,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-04-03 03:00:50,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 326. [2023-04-03 03:00:50,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 312 states have (on average 1.2756410256410255) internal successors, (398), 322 states have internal predecessors, (398), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:50,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 401 transitions. [2023-04-03 03:00:50,759 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 401 transitions. Word has length 69 [2023-04-03 03:00:50,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:50,759 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 401 transitions. [2023-04-03 03:00:50,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:50,760 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 401 transitions. [2023-04-03 03:00:50,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 03:00:50,761 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:50,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:00:50,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 03:00:50,761 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:50,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:50,762 INFO L85 PathProgramCache]: Analyzing trace with hash 973053257, now seen corresponding path program 1 times [2023-04-03 03:00:50,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:50,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804998143] [2023-04-03 03:00:50,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:50,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:51,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:00:51,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:51,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804998143] [2023-04-03 03:00:51,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804998143] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:51,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:51,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:00:51,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35848625] [2023-04-03 03:00:51,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:51,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:00:51,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:51,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:00:51,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:00:51,138 INFO L87 Difference]: Start difference. First operand 326 states and 401 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:51,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:51,857 INFO L93 Difference]: Finished difference Result 681 states and 854 transitions. [2023-04-03 03:00:51,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:00:51,858 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 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 69 [2023-04-03 03:00:51,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:51,861 INFO L225 Difference]: With dead ends: 681 [2023-04-03 03:00:51,861 INFO L226 Difference]: Without dead ends: 662 [2023-04-03 03:00:51,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:00:51,862 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 1534 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:51,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 999 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:00:51,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2023-04-03 03:00:51,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 326. [2023-04-03 03:00:51,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 312 states have (on average 1.2692307692307692) internal successors, (396), 322 states have internal predecessors, (396), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:51,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 399 transitions. [2023-04-03 03:00:51,921 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 399 transitions. Word has length 69 [2023-04-03 03:00:51,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:51,924 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 399 transitions. [2023-04-03 03:00:51,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:51,926 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 399 transitions. [2023-04-03 03:00:51,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 03:00:51,927 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:51,927 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] [2023-04-03 03:00:51,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 03:00:51,928 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:51,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:51,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1925442519, now seen corresponding path program 1 times [2023-04-03 03:00:51,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:51,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644645167] [2023-04-03 03:00:51,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:51,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:52,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:00:52,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:52,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644645167] [2023-04-03 03:00:52,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644645167] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:52,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:52,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:00:52,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106470680] [2023-04-03 03:00:52,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:52,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:00:52,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:52,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:00:52,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:00:52,237 INFO L87 Difference]: Start difference. First operand 326 states and 399 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:52,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:52,753 INFO L93 Difference]: Finished difference Result 549 states and 686 transitions. [2023-04-03 03:00:52,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-03 03:00:52,753 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 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 69 [2023-04-03 03:00:52,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:52,755 INFO L225 Difference]: With dead ends: 549 [2023-04-03 03:00:52,755 INFO L226 Difference]: Without dead ends: 406 [2023-04-03 03:00:52,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2023-04-03 03:00:52,756 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 675 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:52,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 810 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:00:52,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-04-03 03:00:52,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 326. [2023-04-03 03:00:52,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 312 states have (on average 1.2628205128205128) internal successors, (394), 322 states have internal predecessors, (394), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:52,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 397 transitions. [2023-04-03 03:00:52,812 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 397 transitions. Word has length 69 [2023-04-03 03:00:52,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:52,812 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 397 transitions. [2023-04-03 03:00:52,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:52,813 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 397 transitions. [2023-04-03 03:00:52,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 03:00:52,813 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:52,813 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] [2023-04-03 03:00:52,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-03 03:00:52,814 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:52,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:52,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1609588343, now seen corresponding path program 1 times [2023-04-03 03:00:52,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:52,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011780015] [2023-04-03 03:00:52,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:52,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:53,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:00:53,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:53,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011780015] [2023-04-03 03:00:53,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011780015] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:53,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:53,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:00:53,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94536530] [2023-04-03 03:00:53,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:53,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:00:53,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:53,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:00:53,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:00:53,154 INFO L87 Difference]: Start difference. First operand 326 states and 397 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:53,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:53,863 INFO L93 Difference]: Finished difference Result 719 states and 896 transitions. [2023-04-03 03:00:53,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:00:53,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 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 69 [2023-04-03 03:00:53,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:53,866 INFO L225 Difference]: With dead ends: 719 [2023-04-03 03:00:53,866 INFO L226 Difference]: Without dead ends: 641 [2023-04-03 03:00:53,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:00:53,868 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 1525 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:53,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 947 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:00:53,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-04-03 03:00:53,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 326. [2023-04-03 03:00:53,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 312 states have (on average 1.2596153846153846) internal successors, (393), 322 states have internal predecessors, (393), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:53,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 396 transitions. [2023-04-03 03:00:53,964 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 396 transitions. Word has length 69 [2023-04-03 03:00:53,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:53,964 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 396 transitions. [2023-04-03 03:00:53,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:53,965 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 396 transitions. [2023-04-03 03:00:53,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 03:00:53,966 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:53,966 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] [2023-04-03 03:00:53,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-03 03:00:53,966 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:53,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:53,966 INFO L85 PathProgramCache]: Analyzing trace with hash 238367849, now seen corresponding path program 1 times [2023-04-03 03:00:53,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:53,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414289391] [2023-04-03 03:00:53,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:53,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:54,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:00:54,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:54,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414289391] [2023-04-03 03:00:54,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414289391] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:54,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:54,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:00:54,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590923010] [2023-04-03 03:00:54,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:54,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:00:54,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:54,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:00:54,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:00:54,576 INFO L87 Difference]: Start difference. First operand 326 states and 396 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:56,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:56,202 INFO L93 Difference]: Finished difference Result 1093 states and 1389 transitions. [2023-04-03 03:00:56,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:00:56,202 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 2 states have call successors, (2), 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 69 [2023-04-03 03:00:56,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:56,207 INFO L225 Difference]: With dead ends: 1093 [2023-04-03 03:00:56,207 INFO L226 Difference]: Without dead ends: 1002 [2023-04-03 03:00:56,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:00:56,208 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 2425 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2425 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:56,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2425 Valid, 1282 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 03:00:56,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2023-04-03 03:00:56,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 331. [2023-04-03 03:00:56,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 317 states have (on average 1.2555205047318612) internal successors, (398), 327 states have internal predecessors, (398), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:56,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 401 transitions. [2023-04-03 03:00:56,312 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 401 transitions. Word has length 69 [2023-04-03 03:00:56,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:56,312 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 401 transitions. [2023-04-03 03:00:56,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:56,312 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 401 transitions. [2023-04-03 03:00:56,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 03:00:56,313 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:56,313 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] [2023-04-03 03:00:56,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-03 03:00:56,313 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:56,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:56,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1857453417, now seen corresponding path program 1 times [2023-04-03 03:00:56,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:56,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140120423] [2023-04-03 03:00:56,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:56,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:56,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:00:56,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:56,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140120423] [2023-04-03 03:00:56,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140120423] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:56,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:56,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:00:56,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927075064] [2023-04-03 03:00:56,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:56,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:00:56,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:56,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:00:56,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:00:56,609 INFO L87 Difference]: Start difference. First operand 331 states and 401 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:57,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:57,366 INFO L93 Difference]: Finished difference Result 652 states and 803 transitions. [2023-04-03 03:00:57,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:00:57,367 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 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 69 [2023-04-03 03:00:57,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:57,369 INFO L225 Difference]: With dead ends: 652 [2023-04-03 03:00:57,369 INFO L226 Difference]: Without dead ends: 646 [2023-04-03 03:00:57,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:00:57,370 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 1182 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:57,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 954 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:00:57,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2023-04-03 03:00:57,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 331. [2023-04-03 03:00:57,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 317 states have (on average 1.252365930599369) internal successors, (397), 327 states have internal predecessors, (397), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:57,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 400 transitions. [2023-04-03 03:00:57,456 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 400 transitions. Word has length 69 [2023-04-03 03:00:57,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:57,456 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 400 transitions. [2023-04-03 03:00:57,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:57,457 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 400 transitions. [2023-04-03 03:00:57,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 03:00:57,457 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:57,457 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] [2023-04-03 03:00:57,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-03 03:00:57,458 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:57,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:57,458 INFO L85 PathProgramCache]: Analyzing trace with hash 914386266, now seen corresponding path program 1 times [2023-04-03 03:00:57,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:57,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094373962] [2023-04-03 03:00:57,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:57,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:59,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:00:59,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:59,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094373962] [2023-04-03 03:00:59,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094373962] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:59,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:59,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2023-04-03 03:00:59,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267558243] [2023-04-03 03:00:59,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:59,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-03 03:00:59,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:59,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-03 03:00:59,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2023-04-03 03:00:59,170 INFO L87 Difference]: Start difference. First operand 331 states and 400 transitions. Second operand has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:02,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:02,054 INFO L93 Difference]: Finished difference Result 673 states and 815 transitions. [2023-04-03 03:01:02,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-04-03 03:01:02,055 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 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 70 [2023-04-03 03:01:02,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:02,057 INFO L225 Difference]: With dead ends: 673 [2023-04-03 03:01:02,057 INFO L226 Difference]: Without dead ends: 600 [2023-04-03 03:01:02,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=382, Invalid=1970, Unknown=0, NotChecked=0, Total=2352 [2023-04-03 03:01:02,059 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 1705 mSDsluCounter, 3910 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 4267 SdHoareTripleChecker+Invalid, 2283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:02,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 4267 Invalid, 2283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:01:02,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2023-04-03 03:01:02,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 330. [2023-04-03 03:01:02,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 316 states have (on average 1.25) internal successors, (395), 326 states have internal predecessors, (395), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:02,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 398 transitions. [2023-04-03 03:01:02,143 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 398 transitions. Word has length 70 [2023-04-03 03:01:02,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:02,143 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 398 transitions. [2023-04-03 03:01:02,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:02,143 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 398 transitions. [2023-04-03 03:01:02,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 03:01:02,144 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:02,144 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] [2023-04-03 03:01:02,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-03 03:01:02,145 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:02,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:02,145 INFO L85 PathProgramCache]: Analyzing trace with hash -832033254, now seen corresponding path program 1 times [2023-04-03 03:01:02,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:02,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229471558] [2023-04-03 03:01:02,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:02,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:03,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:03,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:03,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229471558] [2023-04-03 03:01:03,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229471558] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:03,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:03,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2023-04-03 03:01:03,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787154114] [2023-04-03 03:01:03,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:03,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-03 03:01:03,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:03,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-03 03:01:03,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2023-04-03 03:01:03,658 INFO L87 Difference]: Start difference. First operand 330 states and 398 transitions. Second operand has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:07,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:07,105 INFO L93 Difference]: Finished difference Result 805 states and 994 transitions. [2023-04-03 03:01:07,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-04-03 03:01:07,105 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 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 70 [2023-04-03 03:01:07,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:07,108 INFO L225 Difference]: With dead ends: 805 [2023-04-03 03:01:07,108 INFO L226 Difference]: Without dead ends: 732 [2023-04-03 03:01:07,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=418, Invalid=2032, Unknown=0, NotChecked=0, Total=2450 [2023-04-03 03:01:07,110 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 2237 mSDsluCounter, 7274 mSDsCounter, 0 mSdLazyCounter, 3398 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2237 SdHoareTripleChecker+Valid, 7771 SdHoareTripleChecker+Invalid, 3440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:07,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2237 Valid, 7771 Invalid, 3440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3398 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-03 03:01:07,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2023-04-03 03:01:07,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 336. [2023-04-03 03:01:07,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 322 states have (on average 1.2546583850931676) internal successors, (404), 332 states have internal predecessors, (404), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:07,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 407 transitions. [2023-04-03 03:01:07,204 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 407 transitions. Word has length 70 [2023-04-03 03:01:07,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:07,205 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 407 transitions. [2023-04-03 03:01:07,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:07,205 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 407 transitions. [2023-04-03 03:01:07,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 03:01:07,206 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:07,206 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] [2023-04-03 03:01:07,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-03 03:01:07,206 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:07,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:07,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1979756902, now seen corresponding path program 1 times [2023-04-03 03:01:07,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:07,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474632278] [2023-04-03 03:01:07,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:07,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:08,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:08,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:08,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474632278] [2023-04-03 03:01:08,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474632278] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:08,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:08,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2023-04-03 03:01:08,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583066624] [2023-04-03 03:01:08,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:08,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-03 03:01:08,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:08,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-03 03:01:08,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2023-04-03 03:01:08,703 INFO L87 Difference]: Start difference. First operand 336 states and 407 transitions. Second operand has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:12,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:12,018 INFO L93 Difference]: Finished difference Result 652 states and 793 transitions. [2023-04-03 03:01:12,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-04-03 03:01:12,019 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 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 70 [2023-04-03 03:01:12,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:12,021 INFO L225 Difference]: With dead ends: 652 [2023-04-03 03:01:12,021 INFO L226 Difference]: Without dead ends: 579 [2023-04-03 03:01:12,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=503, Invalid=2047, Unknown=0, NotChecked=0, Total=2550 [2023-04-03 03:01:12,028 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 2160 mSDsluCounter, 4562 mSDsCounter, 0 mSdLazyCounter, 2519 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2160 SdHoareTripleChecker+Valid, 4883 SdHoareTripleChecker+Invalid, 2564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:12,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2160 Valid, 4883 Invalid, 2564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2519 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:01:12,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2023-04-03 03:01:12,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 343. [2023-04-03 03:01:12,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 329 states have (on average 1.2522796352583587) internal successors, (412), 339 states have internal predecessors, (412), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:12,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 415 transitions. [2023-04-03 03:01:12,153 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 415 transitions. Word has length 70 [2023-04-03 03:01:12,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:12,153 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 415 transitions. [2023-04-03 03:01:12,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:12,154 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 415 transitions. [2023-04-03 03:01:12,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 03:01:12,155 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:12,155 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] [2023-04-03 03:01:12,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-03 03:01:12,155 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:12,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:12,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1991870918, now seen corresponding path program 1 times [2023-04-03 03:01:12,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:12,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167248330] [2023-04-03 03:01:12,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:12,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:13,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:13,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:13,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167248330] [2023-04-03 03:01:13,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167248330] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:13,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:13,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-04-03 03:01:13,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495682499] [2023-04-03 03:01:13,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:13,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-03 03:01:13,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:13,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-03 03:01:13,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-04-03 03:01:13,040 INFO L87 Difference]: Start difference. First operand 343 states and 415 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:15,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:15,094 INFO L93 Difference]: Finished difference Result 962 states and 1204 transitions. [2023-04-03 03:01:15,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-03 03:01:15,095 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 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 70 [2023-04-03 03:01:15,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:15,098 INFO L225 Difference]: With dead ends: 962 [2023-04-03 03:01:15,099 INFO L226 Difference]: Without dead ends: 886 [2023-04-03 03:01:15,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2023-04-03 03:01:15,100 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 1421 mSDsluCounter, 3357 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 3775 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:15,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 3775 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 03:01:15,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2023-04-03 03:01:15,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 343. [2023-04-03 03:01:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 329 states have (on average 1.2462006079027355) internal successors, (410), 339 states have internal predecessors, (410), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:15,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 413 transitions. [2023-04-03 03:01:15,258 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 413 transitions. Word has length 70 [2023-04-03 03:01:15,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:15,259 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 413 transitions. [2023-04-03 03:01:15,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:15,259 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 413 transitions. [2023-04-03 03:01:15,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 03:01:15,260 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:15,260 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] [2023-04-03 03:01:15,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-03 03:01:15,260 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:15,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:15,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1345143842, now seen corresponding path program 1 times [2023-04-03 03:01:15,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:15,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528729679] [2023-04-03 03:01:15,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:15,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:15,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:15,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:15,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528729679] [2023-04-03 03:01:15,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528729679] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:15,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:15,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:01:15,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572416523] [2023-04-03 03:01:15,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:15,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:01:15,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:15,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:01:15,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:01:15,561 INFO L87 Difference]: Start difference. First operand 343 states and 413 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:16,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:16,506 INFO L93 Difference]: Finished difference Result 758 states and 945 transitions. [2023-04-03 03:01:16,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:01:16,506 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (2), 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 70 [2023-04-03 03:01:16,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:16,509 INFO L225 Difference]: With dead ends: 758 [2023-04-03 03:01:16,509 INFO L226 Difference]: Without dead ends: 667 [2023-04-03 03:01:16,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:01:16,510 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 1253 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:16,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 1175 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:01:16,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2023-04-03 03:01:16,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 343. [2023-04-03 03:01:16,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 329 states have (on average 1.243161094224924) internal successors, (409), 339 states have internal predecessors, (409), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:16,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 412 transitions. [2023-04-03 03:01:16,657 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 412 transitions. Word has length 70 [2023-04-03 03:01:16,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:16,657 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 412 transitions. [2023-04-03 03:01:16,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:16,658 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 412 transitions. [2023-04-03 03:01:16,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 03:01:16,659 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:16,659 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] [2023-04-03 03:01:16,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-03 03:01:16,659 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:16,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:16,659 INFO L85 PathProgramCache]: Analyzing trace with hash -539180530, now seen corresponding path program 1 times [2023-04-03 03:01:16,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:16,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469536843] [2023-04-03 03:01:16,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:16,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:17,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:17,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469536843] [2023-04-03 03:01:17,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469536843] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:17,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:17,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-04-03 03:01:17,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128126688] [2023-04-03 03:01:17,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:17,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-03 03:01:17,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:17,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-03 03:01:17,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2023-04-03 03:01:17,944 INFO L87 Difference]: Start difference. First operand 343 states and 412 transitions. Second operand has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:20,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:20,562 INFO L93 Difference]: Finished difference Result 681 states and 823 transitions. [2023-04-03 03:01:20,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-03 03:01:20,563 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 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 71 [2023-04-03 03:01:20,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:20,565 INFO L225 Difference]: With dead ends: 681 [2023-04-03 03:01:20,565 INFO L226 Difference]: Without dead ends: 605 [2023-04-03 03:01:20,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=324, Invalid=1656, Unknown=0, NotChecked=0, Total=1980 [2023-04-03 03:01:20,566 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 1627 mSDsluCounter, 4487 mSDsCounter, 0 mSdLazyCounter, 2357 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 4858 SdHoareTripleChecker+Invalid, 2396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:20,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1627 Valid, 4858 Invalid, 2396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2357 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:01:20,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2023-04-03 03:01:20,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 354. [2023-04-03 03:01:20,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 340 states have (on average 1.25) internal successors, (425), 350 states have internal predecessors, (425), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:20,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 428 transitions. [2023-04-03 03:01:20,687 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 428 transitions. Word has length 71 [2023-04-03 03:01:20,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:20,687 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 428 transitions. [2023-04-03 03:01:20,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:20,687 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 428 transitions. [2023-04-03 03:01:20,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 03:01:20,688 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:20,688 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] [2023-04-03 03:01:20,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-03 03:01:20,689 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:20,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:20,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1829131630, now seen corresponding path program 1 times [2023-04-03 03:01:20,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:20,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452088387] [2023-04-03 03:01:20,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:20,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:21,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:21,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452088387] [2023-04-03 03:01:21,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452088387] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:21,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:21,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:01:21,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362132016] [2023-04-03 03:01:21,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:21,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:01:21,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:21,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:01:21,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:01:21,179 INFO L87 Difference]: Start difference. First operand 354 states and 428 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:21,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:21,849 INFO L93 Difference]: Finished difference Result 597 states and 740 transitions. [2023-04-03 03:01:21,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 03:01:21,849 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 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 71 [2023-04-03 03:01:21,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:21,851 INFO L225 Difference]: With dead ends: 597 [2023-04-03 03:01:21,851 INFO L226 Difference]: Without dead ends: 516 [2023-04-03 03:01:21,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:01:21,856 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 1134 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:21,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 2065 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:01:21,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2023-04-03 03:01:21,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 310. [2023-04-03 03:01:21,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 299 states have (on average 1.2441471571906355) internal successors, (372), 306 states have internal predecessors, (372), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:21,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 375 transitions. [2023-04-03 03:01:21,981 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 375 transitions. Word has length 71 [2023-04-03 03:01:21,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:21,981 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 375 transitions. [2023-04-03 03:01:21,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:21,982 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 375 transitions. [2023-04-03 03:01:21,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 03:01:21,983 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:21,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:21,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-03 03:01:21,986 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:21,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:21,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1208477934, now seen corresponding path program 1 times [2023-04-03 03:01:21,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:21,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765544554] [2023-04-03 03:01:21,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:21,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:23,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:23,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765544554] [2023-04-03 03:01:23,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765544554] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:23,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:23,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-04-03 03:01:23,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79884649] [2023-04-03 03:01:23,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:23,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-03 03:01:23,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:23,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-03 03:01:23,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2023-04-03 03:01:23,325 INFO L87 Difference]: Start difference. First operand 310 states and 375 transitions. Second operand has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:25,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:25,660 INFO L93 Difference]: Finished difference Result 636 states and 771 transitions. [2023-04-03 03:01:25,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-04-03 03:01:25,661 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 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 71 [2023-04-03 03:01:25,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:25,663 INFO L225 Difference]: With dead ends: 636 [2023-04-03 03:01:25,663 INFO L226 Difference]: Without dead ends: 560 [2023-04-03 03:01:25,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=367, Invalid=1613, Unknown=0, NotChecked=0, Total=1980 [2023-04-03 03:01:25,664 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 1647 mSDsluCounter, 4072 mSDsCounter, 0 mSdLazyCounter, 2053 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 4410 SdHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:25,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1647 Valid, 4410 Invalid, 2096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2053 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:01:25,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2023-04-03 03:01:25,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 317. [2023-04-03 03:01:25,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 306 states have (on average 1.2450980392156863) internal successors, (381), 313 states have internal predecessors, (381), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:25,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 384 transitions. [2023-04-03 03:01:25,816 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 384 transitions. Word has length 71 [2023-04-03 03:01:25,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:25,816 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 384 transitions. [2023-04-03 03:01:25,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:25,816 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 384 transitions. [2023-04-03 03:01:25,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 03:01:25,817 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:25,817 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] [2023-04-03 03:01:25,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-03 03:01:25,817 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:25,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:25,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1318617010, now seen corresponding path program 1 times [2023-04-03 03:01:25,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:25,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294280051] [2023-04-03 03:01:25,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:25,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:26,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:26,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294280051] [2023-04-03 03:01:26,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294280051] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:26,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:26,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-03 03:01:26,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006006554] [2023-04-03 03:01:26,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:26,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-03 03:01:26,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:26,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-03 03:01:26,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-03 03:01:26,248 INFO L87 Difference]: Start difference. First operand 317 states and 384 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:26,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:26,829 INFO L93 Difference]: Finished difference Result 586 states and 720 transitions. [2023-04-03 03:01:26,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 03:01:26,829 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 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 71 [2023-04-03 03:01:26,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:26,831 INFO L225 Difference]: With dead ends: 586 [2023-04-03 03:01:26,831 INFO L226 Difference]: Without dead ends: 419 [2023-04-03 03:01:26,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2023-04-03 03:01:26,832 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 1011 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:26,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 908 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:01:26,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-04-03 03:01:26,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 222. [2023-04-03 03:01:26,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 215 states have (on average 1.2465116279069768) internal successors, (268), 218 states have internal predecessors, (268), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:26,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 271 transitions. [2023-04-03 03:01:26,951 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 271 transitions. Word has length 71 [2023-04-03 03:01:26,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:26,952 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 271 transitions. [2023-04-03 03:01:26,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:26,952 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 271 transitions. [2023-04-03 03:01:26,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 03:01:26,952 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:26,952 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] [2023-04-03 03:01:26,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-03 03:01:26,952 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:26,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:26,953 INFO L85 PathProgramCache]: Analyzing trace with hash 159602485, now seen corresponding path program 1 times [2023-04-03 03:01:26,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:26,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550120393] [2023-04-03 03:01:26,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:26,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:27,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:27,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:27,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550120393] [2023-04-03 03:01:27,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550120393] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:27,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:27,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:01:27,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869364761] [2023-04-03 03:01:27,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:27,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:01:27,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:27,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:01:27,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:01:27,408 INFO L87 Difference]: Start difference. First operand 222 states and 271 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:28,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:28,145 INFO L93 Difference]: Finished difference Result 625 states and 788 transitions. [2023-04-03 03:01:28,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:01:28,145 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 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 72 [2023-04-03 03:01:28,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:28,147 INFO L225 Difference]: With dead ends: 625 [2023-04-03 03:01:28,147 INFO L226 Difference]: Without dead ends: 526 [2023-04-03 03:01:28,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:01:28,149 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 495 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:28,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 1622 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:01:28,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-04-03 03:01:28,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 188. [2023-04-03 03:01:28,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 183 states have (on average 1.2076502732240437) internal successors, (221), 184 states have internal predecessors, (221), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:28,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 224 transitions. [2023-04-03 03:01:28,288 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 224 transitions. Word has length 72 [2023-04-03 03:01:28,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:28,288 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 224 transitions. [2023-04-03 03:01:28,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:28,288 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 224 transitions. [2023-04-03 03:01:28,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-03 03:01:28,289 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:28,289 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] [2023-04-03 03:01:28,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-03 03:01:28,289 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:28,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:28,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2102779438, now seen corresponding path program 1 times [2023-04-03 03:01:28,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:28,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630910770] [2023-04-03 03:01:28,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:28,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:28,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:28,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:28,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630910770] [2023-04-03 03:01:28,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630910770] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:28,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:28,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:01:28,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697997609] [2023-04-03 03:01:28,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:28,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:01:28,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:28,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:01:28,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:01:28,545 INFO L87 Difference]: Start difference. First operand 188 states and 224 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:29,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:29,043 INFO L93 Difference]: Finished difference Result 420 states and 518 transitions. [2023-04-03 03:01:29,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-03 03:01:29,045 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (2), 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 73 [2023-04-03 03:01:29,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:29,046 INFO L225 Difference]: With dead ends: 420 [2023-04-03 03:01:29,046 INFO L226 Difference]: Without dead ends: 314 [2023-04-03 03:01:29,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2023-04-03 03:01:29,047 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 362 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:29,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 413 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:01:29,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-04-03 03:01:29,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 188. [2023-04-03 03:01:29,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 183 states have (on average 1.1967213114754098) internal successors, (219), 184 states have internal predecessors, (219), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:29,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 222 transitions. [2023-04-03 03:01:29,161 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 222 transitions. Word has length 73 [2023-04-03 03:01:29,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:29,161 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 222 transitions. [2023-04-03 03:01:29,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:29,161 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 222 transitions. [2023-04-03 03:01:29,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-03 03:01:29,162 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:29,162 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] [2023-04-03 03:01:29,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-03 03:01:29,162 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:29,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:29,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1548205293, now seen corresponding path program 1 times [2023-04-03 03:01:29,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:29,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103090147] [2023-04-03 03:01:29,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:29,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:30,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:30,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:30,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103090147] [2023-04-03 03:01:30,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103090147] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:30,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:30,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-04-03 03:01:30,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356362725] [2023-04-03 03:01:30,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:30,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-03 03:01:30,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:30,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-03 03:01:30,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:01:30,220 INFO L87 Difference]: Start difference. First operand 188 states and 222 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:31,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:31,581 INFO L93 Difference]: Finished difference Result 372 states and 457 transitions. [2023-04-03 03:01:31,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-03 03:01:31,581 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 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 75 [2023-04-03 03:01:31,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:31,582 INFO L225 Difference]: With dead ends: 372 [2023-04-03 03:01:31,583 INFO L226 Difference]: Without dead ends: 366 [2023-04-03 03:01:31,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=299, Invalid=1423, Unknown=0, NotChecked=0, Total=1722 [2023-04-03 03:01:31,583 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 552 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:31,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 1858 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:01:31,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2023-04-03 03:01:31,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 201. [2023-04-03 03:01:31,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 196 states have (on average 1.1989795918367347) internal successors, (235), 197 states have internal predecessors, (235), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:31,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 238 transitions. [2023-04-03 03:01:31,718 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 238 transitions. Word has length 75 [2023-04-03 03:01:31,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:31,718 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 238 transitions. [2023-04-03 03:01:31,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:31,718 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 238 transitions. [2023-04-03 03:01:31,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-03 03:01:31,719 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:31,719 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] [2023-04-03 03:01:31,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-03 03:01:31,719 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:31,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:31,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1475504119, now seen corresponding path program 1 times [2023-04-03 03:01:31,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:31,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771920357] [2023-04-03 03:01:31,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:31,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:32,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:32,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:32,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771920357] [2023-04-03 03:01:32,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771920357] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:32,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:32,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:01:32,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362314334] [2023-04-03 03:01:32,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:32,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:01:32,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:32,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:01:32,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:01:32,199 INFO L87 Difference]: Start difference. First operand 201 states and 238 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:33,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:33,047 INFO L93 Difference]: Finished difference Result 479 states and 594 transitions. [2023-04-03 03:01:33,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:01:33,047 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 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 76 [2023-04-03 03:01:33,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:33,049 INFO L225 Difference]: With dead ends: 479 [2023-04-03 03:01:33,049 INFO L226 Difference]: Without dead ends: 473 [2023-04-03 03:01:33,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:01:33,050 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 345 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:33,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 1173 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:01:33,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-04-03 03:01:33,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 182. [2023-04-03 03:01:33,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 178 states have (on average 1.1910112359550562) internal successors, (212), 178 states have internal predecessors, (212), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:33,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 215 transitions. [2023-04-03 03:01:33,179 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 215 transitions. Word has length 76 [2023-04-03 03:01:33,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:33,180 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 215 transitions. [2023-04-03 03:01:33,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:33,180 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 215 transitions. [2023-04-03 03:01:33,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-03 03:01:33,180 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:33,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:33,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-03 03:01:33,181 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:33,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:33,181 INFO L85 PathProgramCache]: Analyzing trace with hash 960345298, now seen corresponding path program 1 times [2023-04-03 03:01:33,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:33,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352070548] [2023-04-03 03:01:33,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:33,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:33,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:33,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:33,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352070548] [2023-04-03 03:01:33,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352070548] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:33,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:33,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:01:33,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44247026] [2023-04-03 03:01:33,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:33,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:01:33,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:33,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:01:33,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:01:33,306 INFO L87 Difference]: Start difference. First operand 182 states and 215 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:33,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:33,523 INFO L93 Difference]: Finished difference Result 263 states and 322 transitions. [2023-04-03 03:01:33,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:01:33,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 91 [2023-04-03 03:01:33,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:33,525 INFO L225 Difference]: With dead ends: 263 [2023-04-03 03:01:33,525 INFO L226 Difference]: Without dead ends: 226 [2023-04-03 03:01:33,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:01:33,525 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 56 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:33,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 250 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:01:33,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-04-03 03:01:33,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 216. [2023-04-03 03:01:33,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 212 states have (on average 1.2075471698113207) internal successors, (256), 212 states have internal predecessors, (256), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:33,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 259 transitions. [2023-04-03 03:01:33,721 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 259 transitions. Word has length 91 [2023-04-03 03:01:33,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:33,721 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 259 transitions. [2023-04-03 03:01:33,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:33,721 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 259 transitions. [2023-04-03 03:01:33,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-03 03:01:33,722 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:33,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:33,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-03 03:01:33,723 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:33,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:33,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1909589891, now seen corresponding path program 1 times [2023-04-03 03:01:33,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:33,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052492735] [2023-04-03 03:01:33,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:33,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:33,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:33,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:33,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052492735] [2023-04-03 03:01:33,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052492735] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:33,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:33,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:01:33,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78904568] [2023-04-03 03:01:33,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:33,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:01:33,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:33,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:01:33,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:01:33,860 INFO L87 Difference]: Start difference. First operand 216 states and 259 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:34,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:34,223 INFO L93 Difference]: Finished difference Result 422 states and 533 transitions. [2023-04-03 03:01:34,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:01:34,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 94 [2023-04-03 03:01:34,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:34,225 INFO L225 Difference]: With dead ends: 422 [2023-04-03 03:01:34,225 INFO L226 Difference]: Without dead ends: 319 [2023-04-03 03:01:34,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:01:34,228 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 49 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:34,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 251 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:01:34,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-04-03 03:01:34,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 305. [2023-04-03 03:01:34,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 301 states have (on average 1.2425249169435215) internal successors, (374), 301 states have internal predecessors, (374), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 377 transitions. [2023-04-03 03:01:34,516 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 377 transitions. Word has length 94 [2023-04-03 03:01:34,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:34,516 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 377 transitions. [2023-04-03 03:01:34,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:34,517 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 377 transitions. [2023-04-03 03:01:34,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-03 03:01:34,517 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:34,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:34,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-03 03:01:34,517 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:34,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:34,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1928911146, now seen corresponding path program 1 times [2023-04-03 03:01:34,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:34,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246486705] [2023-04-03 03:01:34,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:34,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:34,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:34,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246486705] [2023-04-03 03:01:34,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246486705] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:34,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:34,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:01:34,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542699096] [2023-04-03 03:01:34,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:34,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:01:34,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:34,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:01:34,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:01:34,640 INFO L87 Difference]: Start difference. First operand 305 states and 377 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:35,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:35,088 INFO L93 Difference]: Finished difference Result 689 states and 887 transitions. [2023-04-03 03:01:35,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:01:35,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 97 [2023-04-03 03:01:35,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:35,089 INFO L225 Difference]: With dead ends: 689 [2023-04-03 03:01:35,089 INFO L226 Difference]: Without dead ends: 497 [2023-04-03 03:01:35,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:01:35,090 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 42 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:35,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 252 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:01:35,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2023-04-03 03:01:35,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 471. [2023-04-03 03:01:35,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 467 states have (on average 1.2676659528907923) internal successors, (592), 467 states have internal predecessors, (592), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:35,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 595 transitions. [2023-04-03 03:01:35,527 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 595 transitions. Word has length 97 [2023-04-03 03:01:35,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:35,527 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 595 transitions. [2023-04-03 03:01:35,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:35,527 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 595 transitions. [2023-04-03 03:01:35,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:01:35,528 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:35,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:35,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-03 03:01:35,528 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:35,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:35,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1552871639, now seen corresponding path program 1 times [2023-04-03 03:01:35,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:35,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772751251] [2023-04-03 03:01:35,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:35,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:35,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:35,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:35,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772751251] [2023-04-03 03:01:35,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772751251] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:35,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:35,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:01:35,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996614722] [2023-04-03 03:01:35,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:35,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:01:35,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:35,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:01:35,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:01:35,652 INFO L87 Difference]: Start difference. First operand 471 states and 595 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:36,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:36,502 INFO L93 Difference]: Finished difference Result 1187 states and 1541 transitions. [2023-04-03 03:01:36,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:01:36,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:01:36,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:36,504 INFO L225 Difference]: With dead ends: 1187 [2023-04-03 03:01:36,504 INFO L226 Difference]: Without dead ends: 829 [2023-04-03 03:01:36,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:01:36,505 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 32 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:36,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 253 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:01:36,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2023-04-03 03:01:37,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 779. [2023-04-03 03:01:37,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 775 states have (on average 1.28) internal successors, (992), 775 states have internal predecessors, (992), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:37,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 995 transitions. [2023-04-03 03:01:37,300 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 995 transitions. Word has length 100 [2023-04-03 03:01:37,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:37,300 INFO L495 AbstractCegarLoop]: Abstraction has 779 states and 995 transitions. [2023-04-03 03:01:37,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:37,300 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 995 transitions. [2023-04-03 03:01:37,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-03 03:01:37,301 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:37,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:37,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-04-03 03:01:37,302 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:37,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:37,302 INFO L85 PathProgramCache]: Analyzing trace with hash 153897465, now seen corresponding path program 1 times [2023-04-03 03:01:37,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:37,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523115095] [2023-04-03 03:01:37,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:37,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:37,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:37,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:37,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523115095] [2023-04-03 03:01:37,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523115095] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:37,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:37,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 03:01:37,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042679464] [2023-04-03 03:01:37,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:37,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 03:01:37,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:37,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 03:01:37,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 03:01:37,424 INFO L87 Difference]: Start difference. First operand 779 states and 995 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:39,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:39,964 INFO L93 Difference]: Finished difference Result 2957 states and 3837 transitions. [2023-04-03 03:01:39,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-03 03:01:39,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-03 03:01:39,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:39,970 INFO L225 Difference]: With dead ends: 2957 [2023-04-03 03:01:39,970 INFO L226 Difference]: Without dead ends: 2291 [2023-04-03 03:01:39,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-04-03 03:01:39,971 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 543 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:39,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 792 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:01:39,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2023-04-03 03:01:41,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 1157. [2023-04-03 03:01:41,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1153 states have (on average 1.2714657415437989) internal successors, (1466), 1153 states have internal predecessors, (1466), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:41,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1469 transitions. [2023-04-03 03:01:41,407 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1469 transitions. Word has length 103 [2023-04-03 03:01:41,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:41,407 INFO L495 AbstractCegarLoop]: Abstraction has 1157 states and 1469 transitions. [2023-04-03 03:01:41,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:41,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1469 transitions. [2023-04-03 03:01:41,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-03 03:01:41,408 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:41,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:41,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-04-03 03:01:41,408 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:41,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:41,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1359917848, now seen corresponding path program 1 times [2023-04-03 03:01:41,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:41,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094495145] [2023-04-03 03:01:41,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:41,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:41,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:41,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094495145] [2023-04-03 03:01:41,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094495145] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:41,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:41,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:01:41,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319193872] [2023-04-03 03:01:41,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:41,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:01:41,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:41,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:01:41,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:01:41,472 INFO L87 Difference]: Start difference. First operand 1157 states and 1469 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:42,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:42,937 INFO L93 Difference]: Finished difference Result 2467 states and 3161 transitions. [2023-04-03 03:01:42,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:01:42,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2023-04-03 03:01:42,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:42,941 INFO L225 Difference]: With dead ends: 2467 [2023-04-03 03:01:42,941 INFO L226 Difference]: Without dead ends: 1423 [2023-04-03 03:01:42,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:01:42,943 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 67 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:42,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 199 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:01:42,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2023-04-03 03:01:44,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1421. [2023-04-03 03:01:44,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1417 states have (on average 1.2646436132674665) internal successors, (1792), 1417 states have internal predecessors, (1792), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:44,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 1795 transitions. [2023-04-03 03:01:44,438 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 1795 transitions. Word has length 105 [2023-04-03 03:01:44,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:44,438 INFO L495 AbstractCegarLoop]: Abstraction has 1421 states and 1795 transitions. [2023-04-03 03:01:44,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:44,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 1795 transitions. [2023-04-03 03:01:44,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-03 03:01:44,439 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:44,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:44,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-04-03 03:01:44,439 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:44,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:44,440 INFO L85 PathProgramCache]: Analyzing trace with hash -360601775, now seen corresponding path program 1 times [2023-04-03 03:01:44,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:44,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320991962] [2023-04-03 03:01:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:44,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:44,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:44,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320991962] [2023-04-03 03:01:44,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320991962] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:44,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:44,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 03:01:44,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681439321] [2023-04-03 03:01:44,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:44,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 03:01:44,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:44,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 03:01:44,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-03 03:01:44,613 INFO L87 Difference]: Start difference. First operand 1421 states and 1795 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:46,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:46,134 INFO L93 Difference]: Finished difference Result 2731 states and 3469 transitions. [2023-04-03 03:01:46,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-03 03:01:46,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2023-04-03 03:01:46,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:46,138 INFO L225 Difference]: With dead ends: 2731 [2023-04-03 03:01:46,138 INFO L226 Difference]: Without dead ends: 1423 [2023-04-03 03:01:46,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-04-03 03:01:46,140 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 98 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:46,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 261 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:01:46,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2023-04-03 03:01:47,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1421. [2023-04-03 03:01:47,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1417 states have (on average 1.2632321806633733) internal successors, (1790), 1417 states have internal predecessors, (1790), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:47,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 1793 transitions. [2023-04-03 03:01:47,631 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 1793 transitions. Word has length 105 [2023-04-03 03:01:47,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:47,631 INFO L495 AbstractCegarLoop]: Abstraction has 1421 states and 1793 transitions. [2023-04-03 03:01:47,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:47,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 1793 transitions. [2023-04-03 03:01:47,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-04-03 03:01:47,632 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:47,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:47,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-04-03 03:01:47,632 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:47,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:47,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1243867074, now seen corresponding path program 1 times [2023-04-03 03:01:47,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:47,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677743943] [2023-04-03 03:01:47,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:47,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:47,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:47,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:47,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677743943] [2023-04-03 03:01:47,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677743943] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:47,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:47,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 03:01:47,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772134612] [2023-04-03 03:01:47,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:47,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 03:01:47,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:47,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 03:01:47,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:01:47,924 INFO L87 Difference]: Start difference. First operand 1421 states and 1793 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:50,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:50,174 INFO L93 Difference]: Finished difference Result 1912 states and 2387 transitions. [2023-04-03 03:01:50,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:01:50,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106 [2023-04-03 03:01:50,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:50,179 INFO L225 Difference]: With dead ends: 1912 [2023-04-03 03:01:50,179 INFO L226 Difference]: Without dead ends: 1910 [2023-04-03 03:01:50,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-03 03:01:50,180 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 283 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:50,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 808 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:01:50,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2023-04-03 03:01:51,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1421. [2023-04-03 03:01:51,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1417 states have (on average 1.2462949894142554) internal successors, (1766), 1417 states have internal predecessors, (1766), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:51,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 1769 transitions. [2023-04-03 03:01:51,718 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 1769 transitions. Word has length 106 [2023-04-03 03:01:51,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:51,718 INFO L495 AbstractCegarLoop]: Abstraction has 1421 states and 1769 transitions. [2023-04-03 03:01:51,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:51,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 1769 transitions. [2023-04-03 03:01:51,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-04-03 03:01:51,719 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:51,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:51,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-04-03 03:01:51,719 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:51,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:51,720 INFO L85 PathProgramCache]: Analyzing trace with hash -2124902085, now seen corresponding path program 1 times [2023-04-03 03:01:51,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:51,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918304778] [2023-04-03 03:01:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:51,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:52,020 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-03 03:01:52,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:52,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918304778] [2023-04-03 03:01:52,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918304778] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:52,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:52,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:01:52,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979147617] [2023-04-03 03:01:52,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:52,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:01:52,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:52,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:01:52,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:01:52,022 INFO L87 Difference]: Start difference. First operand 1421 states and 1769 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:54,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:54,752 INFO L93 Difference]: Finished difference Result 3554 states and 4441 transitions. [2023-04-03 03:01:54,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-03 03:01:54,753 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 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 122 [2023-04-03 03:01:54,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:54,758 INFO L225 Difference]: With dead ends: 3554 [2023-04-03 03:01:54,758 INFO L226 Difference]: Without dead ends: 2229 [2023-04-03 03:01:54,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2023-04-03 03:01:54,761 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 542 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:54,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 365 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:01:54,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2023-04-03 03:01:56,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 1421. [2023-04-03 03:01:56,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1417 states have (on average 1.2448835568101624) internal successors, (1764), 1417 states have internal predecessors, (1764), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:56,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 1767 transitions. [2023-04-03 03:01:56,321 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 1767 transitions. Word has length 122 [2023-04-03 03:01:56,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:56,321 INFO L495 AbstractCegarLoop]: Abstraction has 1421 states and 1767 transitions. [2023-04-03 03:01:56,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:56,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 1767 transitions. [2023-04-03 03:01:56,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-04-03 03:01:56,322 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:56,322 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:56,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-04-03 03:01:56,322 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:56,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:56,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1447308758, now seen corresponding path program 1 times [2023-04-03 03:01:56,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:56,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038336167] [2023-04-03 03:01:56,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:56,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:57,349 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-03 03:01:57,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:57,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038336167] [2023-04-03 03:01:57,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038336167] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:57,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:57,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-04-03 03:01:57,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267559944] [2023-04-03 03:01:57,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:57,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-03 03:01:57,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:57,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-03 03:01:57,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:01:57,351 INFO L87 Difference]: Start difference. First operand 1421 states and 1767 transitions. Second operand has 21 states, 21 states have (on average 5.333333333333333) internal successors, (112), 21 states have internal predecessors, (112), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:01,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:02:01,192 INFO L93 Difference]: Finished difference Result 4077 states and 5103 transitions. [2023-04-03 03:02:01,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-03 03:02:01,192 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.333333333333333) internal successors, (112), 21 states have internal predecessors, (112), 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 124 [2023-04-03 03:02:01,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:02:01,200 INFO L225 Difference]: With dead ends: 4077 [2023-04-03 03:02:01,200 INFO L226 Difference]: Without dead ends: 2758 [2023-04-03 03:02:01,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=262, Invalid=1220, Unknown=0, NotChecked=0, Total=1482 [2023-04-03 03:02:01,203 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 419 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:02:01,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1168 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:02:01,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2758 states. [2023-04-03 03:02:02,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2758 to 1433. [2023-04-03 03:02:02,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1429 states have (on average 1.2435269419174249) internal successors, (1777), 1429 states have internal predecessors, (1777), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:02,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1780 transitions. [2023-04-03 03:02:02,757 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1780 transitions. Word has length 124 [2023-04-03 03:02:02,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:02:02,757 INFO L495 AbstractCegarLoop]: Abstraction has 1433 states and 1780 transitions. [2023-04-03 03:02:02,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.333333333333333) internal successors, (112), 21 states have internal predecessors, (112), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:02,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1780 transitions. [2023-04-03 03:02:02,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-04-03 03:02:02,758 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:02:02,759 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:02:02,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-04-03 03:02:02,759 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:02:02,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:02:02,759 INFO L85 PathProgramCache]: Analyzing trace with hash -291054281, now seen corresponding path program 1 times [2023-04-03 03:02:02,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:02:02,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094812290] [2023-04-03 03:02:02,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:02,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:02:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:07,205 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:02:07,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:07,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094812290] [2023-04-03 03:02:07,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094812290] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 03:02:07,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585164991] [2023-04-03 03:02:07,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:07,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 03:02:07,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 03:02:07,208 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 03:02:07,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-03 03:02:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:07,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 88 conjunts are in the unsatisfiable core [2023-04-03 03:02:07,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 03:02:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:02:18,812 INFO L327 TraceCheckSpWp]: Computing backward predicates...