/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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:45:25,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:45:25,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:45:25,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 06:45:25,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 06:45:25,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 06:45:25,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 06:45:25,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 06:45:25,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 06:45:25,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 06:45:25,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 06:45:25,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 06:45:25,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 06:45:25,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 06:45:25,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 06:45:25,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 06:45:25,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 06:45:25,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 06:45:25,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 06:45:25,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 06:45:25,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 06:45:25,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 06:45:25,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 06:45:25,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 06:45:25,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 06:45:25,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 06:45:25,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 06:45:25,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 06:45:25,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 06:45:25,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 06:45:25,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 06:45:25,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 06:45:25,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 06:45:25,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:45:25,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:45:25,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:45:25,809 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 06:45:25,831 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:45:25,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:45:25,832 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:45:25,832 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:45:25,832 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:45:25,833 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:45:25,833 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:45:25,833 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:45:25,833 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:45:25,833 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:45:25,834 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:45:25,834 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:45:25,834 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:45:25,834 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:45:25,834 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:45:25,835 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:45:25,835 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:45:25,835 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:45:25,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:45:25,836 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:45:25,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:45:25,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:45:25,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:45:25,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:45:25,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:45:25,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:45:25,837 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:45:25,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:45:25,837 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:45:25,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:45:25,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:45:25,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:45:25,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:45:25,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:45:25,839 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:45:25,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:45:25,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:45:25,839 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:45:25,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:45:25,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:45:25,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:45:25,840 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:45:26,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:45:26,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:45:26,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:45:26,133 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:45:26,135 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:45:26,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 06:45:27,336 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:45:27,659 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:45:27,660 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 06:45:27,685 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d2a85ec2/6b196cdfc1f04991a8fb67f2293899db/FLAGa60fbeca8 [2023-04-01 06:45:27,702 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d2a85ec2/6b196cdfc1f04991a8fb67f2293899db [2023-04-01 06:45:27,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:45:27,707 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:45:27,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:45:27,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:45:27,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:45:27,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:45:27" (1/1) ... [2023-04-01 06:45:27,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16c16ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:45:27, skipping insertion in model container [2023-04-01 06:45:27,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:45:27" (1/1) ... [2023-04-01 06:45:27,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:45:27,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:45:28,454 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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35004,35017] [2023-04-01 06:45:28,473 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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35894,35907] [2023-04-01 06:45:28,495 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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37724,37737] [2023-04-01 06:45:28,512 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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[38998,39011] [2023-04-01 06:45:28,642 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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[53711,53724] [2023-04-01 06:45:28,729 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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[62997,63010] [2023-04-01 06:45:28,742 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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[63890,63903] [2023-04-01 06:45:28,761 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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[65723,65736] [2023-04-01 06:45:28,774 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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[66616,66629] [2023-04-01 06:45:28,805 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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[69389,69402] [2023-04-01 06:45:28,817 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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[70282,70295] [2023-04-01 06:45:28,840 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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[72115,72128] [2023-04-01 06:45:28,914 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:45:28,930 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:45:29,142 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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35004,35017] [2023-04-01 06:45:29,154 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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35894,35907] [2023-04-01 06:45:29,172 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37724,37737] [2023-04-01 06:45:29,187 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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[38998,39011] [2023-04-01 06:45:29,274 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[53711,53724] [2023-04-01 06:45:29,350 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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[62997,63010] [2023-04-01 06:45:29,362 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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[63890,63903] [2023-04-01 06:45:29,381 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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[65723,65736] [2023-04-01 06:45:29,393 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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[66616,66629] [2023-04-01 06:45:29,417 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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[69389,69402] [2023-04-01 06:45:29,429 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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[70282,70295] [2023-04-01 06:45:29,447 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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[72115,72128] [2023-04-01 06:45:29,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:45:29,512 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:45:29,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:45:29 WrapperNode [2023-04-01 06:45:29,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:45:29,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:45:29,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:45:29,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:45:29,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:45:29" (1/1) ... [2023-04-01 06:45:29,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:45:29" (1/1) ... [2023-04-01 06:45:29,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:45:29" (1/1) ... [2023-04-01 06:45:29,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:45:29" (1/1) ... [2023-04-01 06:45:29,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:45:29" (1/1) ... [2023-04-01 06:45:29,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:45:29" (1/1) ... [2023-04-01 06:45:29,694 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:45:29" (1/1) ... [2023-04-01 06:45:29,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:45:29" (1/1) ... [2023-04-01 06:45:29,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:45:29,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:45:29,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:45:29,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:45:29,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:45:29" (1/1) ... [2023-04-01 06:45:29,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:45:29,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:45:29,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 06:45:29,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 06:45:29,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:45:29,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:45:29,801 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:45:29,801 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 06:45:29,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:45:29,802 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:45:29,802 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:45:29,802 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:45:29,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:45:29,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 06:45:29,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-01 06:45:29,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 06:45:29,802 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 06:45:29,802 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 06:45:29,803 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 06:45:29,803 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 06:45:29,803 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 06:45:29,803 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 06:45:29,803 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 06:45:29,803 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 06:45:29,804 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 06:45:29,804 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 06:45:29,804 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:45:29,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:45:29,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:45:29,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:45:29,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:45:29,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:45:29,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:45:30,054 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:45:30,056 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:45:32,151 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:45:33,155 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:45:33,156 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 06:45:33,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:45:33 BoogieIcfgContainer [2023-04-01 06:45:33,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:45:33,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:45:33,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:45:33,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:45:33,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:45:27" (1/3) ... [2023-04-01 06:45:33,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f26e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:45:33, skipping insertion in model container [2023-04-01 06:45:33,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:45:29" (2/3) ... [2023-04-01 06:45:33,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f26e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:45:33, skipping insertion in model container [2023-04-01 06:45:33,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:45:33" (3/3) ... [2023-04-01 06:45:33,168 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 06:45:33,185 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:45:33,185 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-04-01 06:45:33,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:45:33,249 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;@908996a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:45:33,250 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-04-01 06:45:33,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 784 states, 760 states have (on average 1.7657894736842106) internal successors, (1342), 779 states have internal predecessors, (1342), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 06:45:33,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-04-01 06:45:33,278 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:45:33,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:45:33,279 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-04-01 06:45:33,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:45:33,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1652767125, now seen corresponding path program 1 times [2023-04-01 06:45:33,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:45:33,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786699426] [2023-04-01 06:45:33,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:45:33,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:45:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:45:36,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:45:36,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:45:36,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786699426] [2023-04-01 06:45:36,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786699426] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:45:36,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:45:36,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 06:45:36,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991133177] [2023-04-01 06:45:36,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:45:36,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 06:45:36,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:45:36,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 06:45:36,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-04-01 06:45:36,468 INFO L87 Difference]: Start difference. First operand has 784 states, 760 states have (on average 1.7657894736842106) internal successors, (1342), 779 states have internal predecessors, (1342), 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 6 states, 6 states have (on average 45.333333333333336) internal successors, (272), 6 states have internal predecessors, (272), 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) [2023-04-01 06:45:37,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:45:37,213 INFO L93 Difference]: Finished difference Result 2150 states and 3630 transitions. [2023-04-01 06:45:37,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 06:45:37,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 45.333333333333336) internal successors, (272), 6 states have internal predecessors, (272), 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 275 [2023-04-01 06:45:37,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:45:37,234 INFO L225 Difference]: With dead ends: 2150 [2023-04-01 06:45:37,234 INFO L226 Difference]: Without dead ends: 1606 [2023-04-01 06:45:37,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-04-01 06:45:37,242 INFO L413 NwaCegarLoop]: 1437 mSDtfsCounter, 2660 mSDsluCounter, 2803 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2660 SdHoareTripleChecker+Valid, 4240 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:45:37,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2660 Valid, 4240 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:45:37,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2023-04-01 06:45:37,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1475. [2023-04-01 06:45:37,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1460 states have (on average 1.4383561643835616) internal successors, (2100), 1471 states have internal predecessors, (2100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:45:37,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 2103 transitions. [2023-04-01 06:45:37,382 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 2103 transitions. Word has length 275 [2023-04-01 06:45:37,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:45:37,383 INFO L495 AbstractCegarLoop]: Abstraction has 1475 states and 2103 transitions. [2023-04-01 06:45:37,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.333333333333336) internal successors, (272), 6 states have internal predecessors, (272), 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) [2023-04-01 06:45:37,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 2103 transitions. [2023-04-01 06:45:37,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-04-01 06:45:37,389 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:45:37,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:45:37,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 06:45:37,390 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-04-01 06:45:37,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:45:37,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1309395129, now seen corresponding path program 1 times [2023-04-01 06:45:37,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:45:37,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649195918] [2023-04-01 06:45:37,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:45:37,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:45:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:45:39,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:45:39,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:45:39,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649195918] [2023-04-01 06:45:39,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649195918] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:45:39,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:45:39,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 06:45:39,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635447991] [2023-04-01 06:45:39,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:45:39,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 06:45:39,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:45:39,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 06:45:39,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-04-01 06:45:39,851 INFO L87 Difference]: Start difference. First operand 1475 states and 2103 transitions. Second operand has 6 states, 6 states have (on average 45.333333333333336) internal successors, (272), 6 states have internal predecessors, (272), 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) [2023-04-01 06:45:40,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:45:40,701 INFO L93 Difference]: Finished difference Result 3747 states and 5329 transitions. [2023-04-01 06:45:40,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 06:45:40,701 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 45.333333333333336) internal successors, (272), 6 states have internal predecessors, (272), 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 275 [2023-04-01 06:45:40,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:45:40,715 INFO L225 Difference]: With dead ends: 3747 [2023-04-01 06:45:40,715 INFO L226 Difference]: Without dead ends: 2679 [2023-04-01 06:45:40,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-04-01 06:45:40,721 INFO L413 NwaCegarLoop]: 1146 mSDtfsCounter, 1620 mSDsluCounter, 3255 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 4401 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 06:45:40,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 4401 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 06:45:40,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2023-04-01 06:45:40,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 2437. [2023-04-01 06:45:40,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2437 states, 2422 states have (on average 1.43476465730801) internal successors, (3475), 2433 states have internal predecessors, (3475), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:45:40,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3478 transitions. [2023-04-01 06:45:40,968 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3478 transitions. Word has length 275 [2023-04-01 06:45:40,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:45:40,969 INFO L495 AbstractCegarLoop]: Abstraction has 2437 states and 3478 transitions. [2023-04-01 06:45:40,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.333333333333336) internal successors, (272), 6 states have internal predecessors, (272), 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) [2023-04-01 06:45:40,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3478 transitions. [2023-04-01 06:45:40,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-04-01 06:45:40,974 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:45:40,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:45:40,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 06:45:40,975 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-04-01 06:45:40,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:45:40,976 INFO L85 PathProgramCache]: Analyzing trace with hash 390454042, now seen corresponding path program 1 times [2023-04-01 06:45:40,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:45:40,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966481178] [2023-04-01 06:45:40,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:45:40,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:45:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:45:41,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:45:41,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:45:41,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966481178] [2023-04-01 06:45:41,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966481178] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:45:41,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:45:41,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 06:45:41,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042070051] [2023-04-01 06:45:41,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:45:41,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 06:45:41,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:45:41,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 06:45:41,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 06:45:41,817 INFO L87 Difference]: Start difference. First operand 2437 states and 3478 transitions. Second operand has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2023-04-01 06:45:42,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:45:42,445 INFO L93 Difference]: Finished difference Result 6292 states and 8966 transitions. [2023-04-01 06:45:42,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 06:45:42,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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 275 [2023-04-01 06:45:42,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:45:42,463 INFO L225 Difference]: With dead ends: 6292 [2023-04-01 06:45:42,463 INFO L226 Difference]: Without dead ends: 3868 [2023-04-01 06:45:42,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:45:42,471 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 2403 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2403 SdHoareTripleChecker+Valid, 2507 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:45:42,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2403 Valid, 2507 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:45:42,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2023-04-01 06:45:42,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3683. [2023-04-01 06:45:42,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3683 states, 3668 states have (on average 1.4304798255179934) internal successors, (5247), 3679 states have internal predecessors, (5247), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:45:42,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3683 states to 3683 states and 5250 transitions. [2023-04-01 06:45:42,826 INFO L78 Accepts]: Start accepts. Automaton has 3683 states and 5250 transitions. Word has length 275 [2023-04-01 06:45:42,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:45:42,827 INFO L495 AbstractCegarLoop]: Abstraction has 3683 states and 5250 transitions. [2023-04-01 06:45:42,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2023-04-01 06:45:42,827 INFO L276 IsEmpty]: Start isEmpty. Operand 3683 states and 5250 transitions. [2023-04-01 06:45:42,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-04-01 06:45:42,834 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:45:42,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:45:42,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 06:45:42,835 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-04-01 06:45:42,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:45:42,843 INFO L85 PathProgramCache]: Analyzing trace with hash -272537682, now seen corresponding path program 1 times [2023-04-01 06:45:42,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:45:42,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402124422] [2023-04-01 06:45:42,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:45:42,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:45:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:45:43,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:45:43,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:45:43,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402124422] [2023-04-01 06:45:43,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402124422] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:45:43,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:45:43,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:45:43,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765164689] [2023-04-01 06:45:43,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:45:43,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:45:43,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:45:43,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:45:43,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:45:43,089 INFO L87 Difference]: Start difference. First operand 3683 states and 5250 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2023-04-01 06:45:43,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:45:43,947 INFO L93 Difference]: Finished difference Result 10074 states and 14355 transitions. [2023-04-01 06:45:43,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:45:43,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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 277 [2023-04-01 06:45:43,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:45:43,975 INFO L225 Difference]: With dead ends: 10074 [2023-04-01 06:45:43,976 INFO L226 Difference]: Without dead ends: 6516 [2023-04-01 06:45:43,986 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 [2023-04-01 06:45:43,988 INFO L413 NwaCegarLoop]: 1953 mSDtfsCounter, 931 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 2914 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:45:43,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 2914 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:45:43,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6516 states. [2023-04-01 06:45:44,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6516 to 6434. [2023-04-01 06:45:44,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6434 states, 6419 states have (on average 1.4323103287116374) internal successors, (9194), 6430 states have internal predecessors, (9194), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:45:44,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6434 states to 6434 states and 9197 transitions. [2023-04-01 06:45:44,687 INFO L78 Accepts]: Start accepts. Automaton has 6434 states and 9197 transitions. Word has length 277 [2023-04-01 06:45:44,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:45:44,688 INFO L495 AbstractCegarLoop]: Abstraction has 6434 states and 9197 transitions. [2023-04-01 06:45:44,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2023-04-01 06:45:44,689 INFO L276 IsEmpty]: Start isEmpty. Operand 6434 states and 9197 transitions. [2023-04-01 06:45:44,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-04-01 06:45:44,700 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:45:44,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:45:44,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 06:45:44,708 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-04-01 06:45:44,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:45:44,709 INFO L85 PathProgramCache]: Analyzing trace with hash -424499982, now seen corresponding path program 1 times [2023-04-01 06:45:44,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:45:44,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372989265] [2023-04-01 06:45:44,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:45:44,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:45:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:45:44,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:45:44,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:45:44,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372989265] [2023-04-01 06:45:44,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372989265] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:45:44,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:45:44,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:45:44,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504474580] [2023-04-01 06:45:44,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:45:44,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:45:44,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:45:44,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:45:44,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:45:44,916 INFO L87 Difference]: Start difference. First operand 6434 states and 9197 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2023-04-01 06:45:46,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:45:46,229 INFO L93 Difference]: Finished difference Result 19142 states and 27350 transitions. [2023-04-01 06:45:46,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:45:46,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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 277 [2023-04-01 06:45:46,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:45:46,299 INFO L225 Difference]: With dead ends: 19142 [2023-04-01 06:45:46,299 INFO L226 Difference]: Without dead ends: 12844 [2023-04-01 06:45:46,316 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 [2023-04-01 06:45:46,316 INFO L413 NwaCegarLoop]: 1996 mSDtfsCounter, 1047 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 2993 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:45:46,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 2993 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:45:46,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12844 states. [2023-04-01 06:45:47,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12844 to 6437. [2023-04-01 06:45:47,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6437 states, 6422 states have (on average 1.432108377452507) internal successors, (9197), 6433 states have internal predecessors, (9197), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:45:47,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6437 states to 6437 states and 9200 transitions. [2023-04-01 06:45:47,206 INFO L78 Accepts]: Start accepts. Automaton has 6437 states and 9200 transitions. Word has length 277 [2023-04-01 06:45:47,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:45:47,207 INFO L495 AbstractCegarLoop]: Abstraction has 6437 states and 9200 transitions. [2023-04-01 06:45:47,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2023-04-01 06:45:47,207 INFO L276 IsEmpty]: Start isEmpty. Operand 6437 states and 9200 transitions. [2023-04-01 06:45:47,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-04-01 06:45:47,219 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:45:47,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:45:47,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 06:45:47,220 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-04-01 06:45:47,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:45:47,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1626929935, now seen corresponding path program 1 times [2023-04-01 06:45:47,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:45:47,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053300614] [2023-04-01 06:45:47,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:45:47,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:45:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:45:48,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:45:48,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:45:48,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053300614] [2023-04-01 06:45:48,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053300614] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:45:48,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:45:48,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:45:48,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158009567] [2023-04-01 06:45:48,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:45:48,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:45:48,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:45:48,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:45:48,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:45:48,004 INFO L87 Difference]: Start difference. First operand 6437 states and 9200 transitions. Second operand has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 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) [2023-04-01 06:45:49,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:45:49,226 INFO L93 Difference]: Finished difference Result 16463 states and 23488 transitions. [2023-04-01 06:45:49,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 06:45:49,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 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 278 [2023-04-01 06:45:49,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:45:49,252 INFO L225 Difference]: With dead ends: 16463 [2023-04-01 06:45:49,253 INFO L226 Difference]: Without dead ends: 10045 [2023-04-01 06:45:49,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:45:49,269 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 2985 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2985 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:45:49,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2985 Valid, 2477 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:45:49,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10045 states. [2023-04-01 06:45:50,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10045 to 9583. [2023-04-01 06:45:50,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9583 states, 9568 states have (on average 1.4196279264214047) internal successors, (13583), 9579 states have internal predecessors, (13583), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:45:50,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9583 states to 9583 states and 13586 transitions. [2023-04-01 06:45:50,342 INFO L78 Accepts]: Start accepts. Automaton has 9583 states and 13586 transitions. Word has length 278 [2023-04-01 06:45:50,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:45:50,342 INFO L495 AbstractCegarLoop]: Abstraction has 9583 states and 13586 transitions. [2023-04-01 06:45:50,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 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) [2023-04-01 06:45:50,343 INFO L276 IsEmpty]: Start isEmpty. Operand 9583 states and 13586 transitions. [2023-04-01 06:45:50,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-04-01 06:45:50,358 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:45:50,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:45:50,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 06:45:50,359 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-04-01 06:45:50,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:45:50,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1514492245, now seen corresponding path program 1 times [2023-04-01 06:45:50,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:45:50,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036778382] [2023-04-01 06:45:50,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:45:50,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:45:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:45:51,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:45:51,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:45:51,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036778382] [2023-04-01 06:45:51,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036778382] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:45:51,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:45:51,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 06:45:51,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759876324] [2023-04-01 06:45:51,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:45:51,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 06:45:51,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:45:51,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 06:45:51,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 06:45:51,087 INFO L87 Difference]: Start difference. First operand 9583 states and 13586 transitions. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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) [2023-04-01 06:45:53,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:45:53,391 INFO L93 Difference]: Finished difference Result 28215 states and 39929 transitions. [2023-04-01 06:45:53,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 06:45:53,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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 279 [2023-04-01 06:45:53,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:45:53,447 INFO L225 Difference]: With dead ends: 28215 [2023-04-01 06:45:53,448 INFO L226 Difference]: Without dead ends: 18774 [2023-04-01 06:45:53,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:45:53,470 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 2373 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2373 SdHoareTripleChecker+Valid, 2517 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:45:53,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2373 Valid, 2517 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:45:53,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18774 states. [2023-04-01 06:45:55,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18774 to 18620. [2023-04-01 06:45:55,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18620 states, 18605 states have (on average 1.413168503090567) internal successors, (26292), 18616 states have internal predecessors, (26292), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:45:55,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18620 states to 18620 states and 26295 transitions. [2023-04-01 06:45:55,240 INFO L78 Accepts]: Start accepts. Automaton has 18620 states and 26295 transitions. Word has length 279 [2023-04-01 06:45:55,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:45:55,240 INFO L495 AbstractCegarLoop]: Abstraction has 18620 states and 26295 transitions. [2023-04-01 06:45:55,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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) [2023-04-01 06:45:55,241 INFO L276 IsEmpty]: Start isEmpty. Operand 18620 states and 26295 transitions. [2023-04-01 06:45:55,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-04-01 06:45:55,268 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:45:55,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:45:55,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 06:45:55,268 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-04-01 06:45:55,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:45:55,269 INFO L85 PathProgramCache]: Analyzing trace with hash 373436350, now seen corresponding path program 1 times [2023-04-01 06:45:55,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:45:55,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495483586] [2023-04-01 06:45:55,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:45:55,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:45:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:45:55,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:45:55,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:45:55,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495483586] [2023-04-01 06:45:55,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495483586] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:45:55,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:45:55,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 06:45:55,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800631987] [2023-04-01 06:45:55,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:45:55,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 06:45:55,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:45:55,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 06:45:55,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 06:45:55,958 INFO L87 Difference]: Start difference. First operand 18620 states and 26295 transitions. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 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) [2023-04-01 06:45:59,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:45:59,439 INFO L93 Difference]: Finished difference Result 54833 states and 77276 transitions. [2023-04-01 06:45:59,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 06:45:59,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 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 281 [2023-04-01 06:45:59,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:45:59,540 INFO L225 Difference]: With dead ends: 54833 [2023-04-01 06:45:59,541 INFO L226 Difference]: Without dead ends: 36359 [2023-04-01 06:45:59,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:45:59,586 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 2514 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2514 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:45:59,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2514 Valid, 2338 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:45:59,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36359 states. [2023-04-01 06:46:02,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36359 to 36214. [2023-04-01 06:46:02,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36214 states, 36199 states have (on average 1.4038785601812205) internal successors, (50819), 36210 states have internal predecessors, (50819), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:46:03,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36214 states to 36214 states and 50822 transitions. [2023-04-01 06:46:03,050 INFO L78 Accepts]: Start accepts. Automaton has 36214 states and 50822 transitions. Word has length 281 [2023-04-01 06:46:03,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:46:03,051 INFO L495 AbstractCegarLoop]: Abstraction has 36214 states and 50822 transitions. [2023-04-01 06:46:03,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 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) [2023-04-01 06:46:03,051 INFO L276 IsEmpty]: Start isEmpty. Operand 36214 states and 50822 transitions. [2023-04-01 06:46:03,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2023-04-01 06:46:03,114 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:46:03,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:46:03,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 06:46:03,115 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-04-01 06:46:03,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:46:03,115 INFO L85 PathProgramCache]: Analyzing trace with hash 465883145, now seen corresponding path program 1 times [2023-04-01 06:46:03,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:46:03,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492262262] [2023-04-01 06:46:03,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:46:03,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:46:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:46:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:46:03,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:46:03,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492262262] [2023-04-01 06:46:03,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492262262] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:46:03,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:46:03,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:46:03,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154496780] [2023-04-01 06:46:03,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:46:03,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:46:03,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:46:03,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:46:03,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:46:03,409 INFO L87 Difference]: Start difference. First operand 36214 states and 50822 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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) [2023-04-01 06:46:09,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:46:09,617 INFO L93 Difference]: Finished difference Result 105396 states and 147403 transitions. [2023-04-01 06:46:09,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:46:09,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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 283 [2023-04-01 06:46:09,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:46:09,962 INFO L225 Difference]: With dead ends: 105396 [2023-04-01 06:46:09,962 INFO L226 Difference]: Without dead ends: 70748 [2023-04-01 06:46:10,028 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 [2023-04-01 06:46:10,030 INFO L413 NwaCegarLoop]: 1932 mSDtfsCounter, 914 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 2893 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:46:10,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 2893 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:46:10,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70748 states.