/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 IntervalDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 00:35:58,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 00:35:58,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 00:35:58,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 00:35:58,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 00:35:58,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 00:35:58,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 00:35:58,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 00:35:58,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 00:35:58,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 00:35:58,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 00:35:58,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2023-04-01 00:35:58,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 00:35:58,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 00:35:58,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 00:35:58,810 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 00:35:58,836 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 00:35:58,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 00:35:58,837 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 00:35:58,837 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 00:35:58,838 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 00:35:58,838 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 00:35:58,838 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 00:35:58,838 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 00:35:58,838 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 00:35:58,838 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 00:35:58,839 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 00:35:58,839 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 00:35:58,839 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 00:35:58,839 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 00:35:58,839 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 00:35:58,839 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 00:35:58,839 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 00:35:58,839 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 00:35:58,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 00:35:58,840 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 00:35:58,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 00:35:58,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 00:35:58,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 00:35:58,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 00:35:58,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 00:35:58,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 00:35:58,840 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 00:35:58,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 00:35:58,840 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 00:35:58,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 00:35:58,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 00:35:58,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 00:35:58,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:35:58,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 00:35:58,841 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 00:35:58,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 00:35:58,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 00:35:58,841 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 00:35:58,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 00:35:58,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 00:35:58,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 00:35:58,842 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-04-01 00:35:59,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 00:35:59,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 00:35:59,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 00:35:59,082 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 00:35:59,083 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 00:35:59,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 00:36:00,049 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 00:36:00,291 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 00:36:00,292 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 00:36:00,305 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5e5ee44f/d2bfa59289fd4180bcf0914353015b90/FLAG77028fbec [2023-04-01 00:36:00,318 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5e5ee44f/d2bfa59289fd4180bcf0914353015b90 [2023-04-01 00:36:00,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 00:36:00,321 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 00:36:00,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 00:36:00,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 00:36:00,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 00:36:00,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:36:00" (1/1) ... [2023-04-01 00:36:00,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3990f068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:00, skipping insertion in model container [2023-04-01 00:36:00,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:36:00" (1/1) ... [2023-04-01 00:36:00,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 00:36:00,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 00:36:00,616 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[10927,10940] [2023-04-01 00:36:00,637 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14764,14777] [2023-04-01 00:36:00,645 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15985,15998] [2023-04-01 00:36:00,649 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16691,16704] [2023-04-01 00:36:00,655 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18235,18248] [2023-04-01 00:36:00,658 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18941,18954] [2023-04-01 00:36:00,662 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19970,19983] [2023-04-01 00:36:00,671 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22376,22389] [2023-04-01 00:36:00,674 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23085,23098] [2023-04-01 00:36:00,678 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24122,24135] [2023-04-01 00:36:00,692 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26018,26031] [2023-04-01 00:36:00,717 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29926,29939] [2023-04-01 00:36:00,720 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30635,30648] [2023-04-01 00:36:00,728 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31667,31680] [2023-04-01 00:36:00,734 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33558,33571] [2023-04-01 00:36:00,751 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[36771,36784] [2023-04-01 00:36:00,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:36:00,873 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 00:36:00,921 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[10927,10940] [2023-04-01 00:36:00,938 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14764,14777] [2023-04-01 00:36:00,945 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15985,15998] [2023-04-01 00:36:00,952 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16691,16704] [2023-04-01 00:36:00,959 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18235,18248] [2023-04-01 00:36:00,968 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18941,18954] [2023-04-01 00:36:00,975 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19970,19983] [2023-04-01 00:36:00,998 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22376,22389] [2023-04-01 00:36:01,002 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23085,23098] [2023-04-01 00:36:01,008 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24122,24135] [2023-04-01 00:36:01,016 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26018,26031] [2023-04-01 00:36:01,028 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29926,29939] [2023-04-01 00:36:01,030 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30635,30648] [2023-04-01 00:36:01,032 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31667,31680] [2023-04-01 00:36:01,036 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33558,33571] [2023-04-01 00:36:01,044 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[36771,36784] [2023-04-01 00:36:01,110 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:36:01,125 INFO L208 MainTranslator]: Completed translation [2023-04-01 00:36:01,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:01 WrapperNode [2023-04-01 00:36:01,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 00:36:01,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 00:36:01,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 00:36:01,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 00:36:01,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:01" (1/1) ... [2023-04-01 00:36:01,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:01" (1/1) ... [2023-04-01 00:36:01,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:01" (1/1) ... [2023-04-01 00:36:01,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:01" (1/1) ... [2023-04-01 00:36:01,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:01" (1/1) ... [2023-04-01 00:36:01,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:01" (1/1) ... [2023-04-01 00:36:01,239 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:01" (1/1) ... [2023-04-01 00:36:01,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:01" (1/1) ... [2023-04-01 00:36:01,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 00:36:01,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 00:36:01,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 00:36:01,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 00:36:01,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:01" (1/1) ... [2023-04-01 00:36:01,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:36:01,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:36:01,300 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 00:36:01,318 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 00:36:01,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 00:36:01,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 00:36:01,334 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 00:36:01,334 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 00:36:01,334 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 00:36:01,334 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 00:36:01,334 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 00:36:01,334 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 00:36:01,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 00:36:01,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 00:36:01,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 00:36:01,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-01 00:36:01,334 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 00:36:01,335 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 00:36:01,335 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 00:36:01,335 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 00:36:01,335 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 00:36:01,336 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 00:36:01,336 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 00:36:01,336 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 00:36:01,337 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-01 00:36:01,337 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 00:36:01,337 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 00:36:01,337 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 00:36:01,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 00:36:01,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 00:36:01,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 00:36:01,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 00:36:01,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 00:36:01,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 00:36:01,514 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 00:36:01,516 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 00:36:02,809 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 00:36:02,889 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 00:36:02,890 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 00:36:02,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:36:02 BoogieIcfgContainer [2023-04-01 00:36:02,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 00:36:02,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 00:36:02,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 00:36:02,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 00:36:02,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:36:00" (1/3) ... [2023-04-01 00:36:02,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617a72c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:36:02, skipping insertion in model container [2023-04-01 00:36:02,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:01" (2/3) ... [2023-04-01 00:36:02,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617a72c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:36:02, skipping insertion in model container [2023-04-01 00:36:02,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:36:02" (3/3) ... [2023-04-01 00:36:02,901 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 00:36:02,914 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 00:36:02,914 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-04-01 00:36:02,965 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 00:36:02,970 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;@357d459e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 00:36:02,970 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-04-01 00:36:02,977 INFO L276 IsEmpty]: Start isEmpty. Operand has 608 states, 586 states have (on average 1.8549488054607508) internal successors, (1087), 603 states have internal predecessors, (1087), 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 00:36:02,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-01 00:36:02,999 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:03,000 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] [2023-04-01 00:36:03,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:03,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:03,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1094690805, now seen corresponding path program 1 times [2023-04-01 00:36:03,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:03,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672954535] [2023-04-01 00:36:03,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:03,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:03,587 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 00:36:03,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:03,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672954535] [2023-04-01 00:36:03,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672954535] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:03,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:03,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:36:03,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657273732] [2023-04-01 00:36:03,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:03,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:36:03,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:03,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:36:03,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:36:03,633 INFO L87 Difference]: Start difference. First operand has 608 states, 586 states have (on average 1.8549488054607508) internal successors, (1087), 603 states have internal predecessors, (1087), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (2), 2 states 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 00:36:04,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:04,012 INFO L93 Difference]: Finished difference Result 934 states and 1613 transitions. [2023-04-01 00:36:04,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:36:04,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2023-04-01 00:36:04,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:04,029 INFO L225 Difference]: With dead ends: 934 [2023-04-01 00:36:04,029 INFO L226 Difference]: Without dead ends: 481 [2023-04-01 00:36:04,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:36:04,042 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 2403 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2403 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:04,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2403 Valid, 597 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 00:36:04,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2023-04-01 00:36:04,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2023-04-01 00:36:04,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 462 states have (on average 1.2857142857142858) internal successors, (594), 477 states have internal predecessors, (594), 2 states have call successors, (2), 2 states 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 00:36:04,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 597 transitions. [2023-04-01 00:36:04,115 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 597 transitions. Word has length 74 [2023-04-01 00:36:04,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:04,118 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 597 transitions. [2023-04-01 00:36:04,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (2), 2 states 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 00:36:04,122 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 597 transitions. [2023-04-01 00:36:04,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-01 00:36:04,125 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:04,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:04,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 00:36:04,126 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:04,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:04,127 INFO L85 PathProgramCache]: Analyzing trace with hash 904417533, now seen corresponding path program 1 times [2023-04-01 00:36:04,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:04,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239157782] [2023-04-01 00:36:04,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:04,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:04,334 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 00:36:04,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:04,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239157782] [2023-04-01 00:36:04,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239157782] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:04,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:04,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:36:04,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445476384] [2023-04-01 00:36:04,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:04,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:36:04,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:04,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:36:04,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:36:04,337 INFO L87 Difference]: Start difference. First operand 481 states and 597 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (2), 2 states 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 00:36:04,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:04,588 INFO L93 Difference]: Finished difference Result 794 states and 1011 transitions. [2023-04-01 00:36:04,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:36:04,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2023-04-01 00:36:04,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:04,590 INFO L225 Difference]: With dead ends: 794 [2023-04-01 00:36:04,591 INFO L226 Difference]: Without dead ends: 423 [2023-04-01 00:36:04,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:36:04,592 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 1512 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:04,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 323 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:36:04,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2023-04-01 00:36:04,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2023-04-01 00:36:04,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 404 states have (on average 1.3044554455445545) internal successors, (527), 419 states have internal predecessors, (527), 2 states have call successors, (2), 2 states 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 00:36:04,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 530 transitions. [2023-04-01 00:36:04,608 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 530 transitions. Word has length 75 [2023-04-01 00:36:04,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:04,608 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 530 transitions. [2023-04-01 00:36:04,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (2), 2 states 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 00:36:04,609 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 530 transitions. [2023-04-01 00:36:04,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-01 00:36:04,610 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:04,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:04,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 00:36:04,610 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:04,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:04,610 INFO L85 PathProgramCache]: Analyzing trace with hash 408736247, now seen corresponding path program 1 times [2023-04-01 00:36:04,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:04,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617412495] [2023-04-01 00:36:04,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:04,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:04,728 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 00:36:04,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:04,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617412495] [2023-04-01 00:36:04,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617412495] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:04,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:04,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:36:04,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343038211] [2023-04-01 00:36:04,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:04,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:36:04,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:04,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:36:04,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:36:04,730 INFO L87 Difference]: Start difference. First operand 423 states and 530 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (2), 2 states 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 00:36:04,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:04,927 INFO L93 Difference]: Finished difference Result 736 states and 943 transitions. [2023-04-01 00:36:04,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:36:04,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2023-04-01 00:36:04,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:04,929 INFO L225 Difference]: With dead ends: 736 [2023-04-01 00:36:04,929 INFO L226 Difference]: Without dead ends: 397 [2023-04-01 00:36:04,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:36:04,930 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 1404 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:04,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 297 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:36:04,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-04-01 00:36:04,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2023-04-01 00:36:04,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 378 states have (on average 1.312169312169312) internal successors, (496), 393 states have internal predecessors, (496), 2 states have call successors, (2), 2 states 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 00:36:04,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 499 transitions. [2023-04-01 00:36:04,943 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 499 transitions. Word has length 76 [2023-04-01 00:36:04,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:04,943 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 499 transitions. [2023-04-01 00:36:04,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (2), 2 states 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 00:36:04,944 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 499 transitions. [2023-04-01 00:36:04,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-01 00:36:04,944 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:04,944 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] [2023-04-01 00:36:04,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 00:36:04,945 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:04,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:04,945 INFO L85 PathProgramCache]: Analyzing trace with hash 807955519, now seen corresponding path program 1 times [2023-04-01 00:36:04,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:04,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910703267] [2023-04-01 00:36:04,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:04,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:36:05,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:05,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910703267] [2023-04-01 00:36:05,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910703267] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:05,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:05,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:36:05,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784922423] [2023-04-01 00:36:05,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:05,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:36:05,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:05,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:36:05,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:36:05,087 INFO L87 Difference]: Start difference. First operand 397 states and 499 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (2), 2 states 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 00:36:05,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:05,322 INFO L93 Difference]: Finished difference Result 710 states and 911 transitions. [2023-04-01 00:36:05,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:36:05,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2023-04-01 00:36:05,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:05,324 INFO L225 Difference]: With dead ends: 710 [2023-04-01 00:36:05,324 INFO L226 Difference]: Without dead ends: 387 [2023-04-01 00:36:05,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:36:05,326 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 1346 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:05,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1346 Valid, 269 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:36:05,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-04-01 00:36:05,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2023-04-01 00:36:05,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 368 states have (on average 1.3125) internal successors, (483), 383 states have internal predecessors, (483), 2 states have call successors, (2), 2 states 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 00:36:05,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 486 transitions. [2023-04-01 00:36:05,347 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 486 transitions. Word has length 77 [2023-04-01 00:36:05,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:05,348 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 486 transitions. [2023-04-01 00:36:05,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (2), 2 states 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 00:36:05,349 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 486 transitions. [2023-04-01 00:36:05,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-01 00:36:05,349 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:05,349 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] [2023-04-01 00:36:05,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 00:36:05,350 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:05,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:05,350 INFO L85 PathProgramCache]: Analyzing trace with hash 414812953, now seen corresponding path program 1 times [2023-04-01 00:36:05,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:05,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382301945] [2023-04-01 00:36:05,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:05,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:05,460 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 00:36:05,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:05,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382301945] [2023-04-01 00:36:05,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382301945] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:05,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:05,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:36:05,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714080412] [2023-04-01 00:36:05,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:05,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:36:05,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:05,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:36:05,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:36:05,462 INFO L87 Difference]: Start difference. First operand 387 states and 486 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (2), 2 states 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 00:36:05,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:05,634 INFO L93 Difference]: Finished difference Result 700 states and 897 transitions. [2023-04-01 00:36:05,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:36:05,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 78 [2023-04-01 00:36:05,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:05,637 INFO L225 Difference]: With dead ends: 700 [2023-04-01 00:36:05,637 INFO L226 Difference]: Without dead ends: 370 [2023-04-01 00:36:05,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:36:05,639 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 1347 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:05,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1347 Valid, 275 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:36:05,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-04-01 00:36:05,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2023-04-01 00:36:05,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 351 states have (on average 1.3219373219373218) internal successors, (464), 366 states have internal predecessors, (464), 2 states have call successors, (2), 2 states 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 00:36:05,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 467 transitions. [2023-04-01 00:36:05,655 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 467 transitions. Word has length 78 [2023-04-01 00:36:05,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:05,655 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 467 transitions. [2023-04-01 00:36:05,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (2), 2 states 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 00:36:05,656 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 467 transitions. [2023-04-01 00:36:05,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-01 00:36:05,660 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:05,660 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] [2023-04-01 00:36:05,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 00:36:05,660 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:05,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:05,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1214241612, now seen corresponding path program 1 times [2023-04-01 00:36:05,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:05,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419095830] [2023-04-01 00:36:05,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:05,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:05,956 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 00:36:05,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:05,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419095830] [2023-04-01 00:36:05,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419095830] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:05,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:05,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:05,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245833386] [2023-04-01 00:36:05,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:05,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:05,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:05,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:05,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:05,960 INFO L87 Difference]: Start difference. First operand 370 states and 467 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 2 states have call successors, (2), 2 states 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 00:36:06,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:06,553 INFO L93 Difference]: Finished difference Result 687 states and 867 transitions. [2023-04-01 00:36:06,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:36:06,553 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2023-04-01 00:36:06,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:06,556 INFO L225 Difference]: With dead ends: 687 [2023-04-01 00:36:06,556 INFO L226 Difference]: Without dead ends: 634 [2023-04-01 00:36:06,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 00:36:06,557 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 2024 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:06,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2024 Valid, 1209 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 00:36:06,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2023-04-01 00:36:06,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 370. [2023-04-01 00:36:06,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 351 states have (on average 1.3190883190883191) internal successors, (463), 366 states have internal predecessors, (463), 2 states have call successors, (2), 2 states 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 00:36:06,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 466 transitions. [2023-04-01 00:36:06,580 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 466 transitions. Word has length 79 [2023-04-01 00:36:06,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:06,581 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 466 transitions. [2023-04-01 00:36:06,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 2 states have call successors, (2), 2 states 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 00:36:06,596 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 466 transitions. [2023-04-01 00:36:06,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-01 00:36:06,596 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:06,596 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] [2023-04-01 00:36:06,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 00:36:06,597 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:06,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:06,597 INFO L85 PathProgramCache]: Analyzing trace with hash 133556115, now seen corresponding path program 1 times [2023-04-01 00:36:06,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:06,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576936074] [2023-04-01 00:36:06,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:06,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:06,932 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 00:36:06,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:06,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576936074] [2023-04-01 00:36:06,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576936074] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:06,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:06,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 00:36:06,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825248406] [2023-04-01 00:36:06,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:06,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 00:36:06,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:06,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 00:36:06,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 00:36:06,934 INFO L87 Difference]: Start difference. First operand 370 states and 466 transitions. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 2 states have call successors, (2), 2 states 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 00:36:07,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:07,731 INFO L93 Difference]: Finished difference Result 716 states and 902 transitions. [2023-04-01 00:36:07,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-01 00:36:07,731 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2023-04-01 00:36:07,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:07,733 INFO L225 Difference]: With dead ends: 716 [2023-04-01 00:36:07,733 INFO L226 Difference]: Without dead ends: 663 [2023-04-01 00:36:07,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-04-01 00:36:07,735 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 1833 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:07,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1833 Valid, 1541 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 00:36:07,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2023-04-01 00:36:07,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 377. [2023-04-01 00:36:07,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 358 states have (on average 1.3212290502793296) internal successors, (473), 373 states have internal predecessors, (473), 2 states have call successors, (2), 2 states 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 00:36:07,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 476 transitions. [2023-04-01 00:36:07,759 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 476 transitions. Word has length 79 [2023-04-01 00:36:07,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:07,759 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 476 transitions. [2023-04-01 00:36:07,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 2 states have call successors, (2), 2 states 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 00:36:07,759 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 476 transitions. [2023-04-01 00:36:07,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-01 00:36:07,760 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:07,760 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] [2023-04-01 00:36:07,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 00:36:07,760 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:07,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:07,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1925051142, now seen corresponding path program 1 times [2023-04-01 00:36:07,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:07,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420451038] [2023-04-01 00:36:07,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:07,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:08,083 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 00:36:08,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:08,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420451038] [2023-04-01 00:36:08,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420451038] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:08,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:08,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:08,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511538058] [2023-04-01 00:36:08,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:08,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:08,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:08,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:08,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:08,084 INFO L87 Difference]: Start difference. First operand 377 states and 476 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 2 states have call successors, (2), 2 states 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 00:36:08,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:08,748 INFO L93 Difference]: Finished difference Result 751 states and 956 transitions. [2023-04-01 00:36:08,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:36:08,748 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2023-04-01 00:36:08,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:08,750 INFO L225 Difference]: With dead ends: 751 [2023-04-01 00:36:08,751 INFO L226 Difference]: Without dead ends: 646 [2023-04-01 00:36:08,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 00:36:08,752 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 2783 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2783 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:08,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2783 Valid, 1204 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 00:36:08,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2023-04-01 00:36:08,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 370. [2023-04-01 00:36:08,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 351 states have (on average 1.3162393162393162) internal successors, (462), 366 states have internal predecessors, (462), 2 states have call successors, (2), 2 states 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 00:36:08,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 465 transitions. [2023-04-01 00:36:08,778 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 465 transitions. Word has length 79 [2023-04-01 00:36:08,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:08,779 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 465 transitions. [2023-04-01 00:36:08,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 2 states have call successors, (2), 2 states 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 00:36:08,779 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 465 transitions. [2023-04-01 00:36:08,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-01 00:36:08,780 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:08,780 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] [2023-04-01 00:36:08,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 00:36:08,780 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:08,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:08,781 INFO L85 PathProgramCache]: Analyzing trace with hash 626538030, now seen corresponding path program 1 times [2023-04-01 00:36:08,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:08,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832101059] [2023-04-01 00:36:08,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:08,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:08,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:09,110 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 00:36:09,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:09,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832101059] [2023-04-01 00:36:09,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832101059] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:09,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:09,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 00:36:09,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088385485] [2023-04-01 00:36:09,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:09,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 00:36:09,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:09,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 00:36:09,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 00:36:09,112 INFO L87 Difference]: Start difference. First operand 370 states and 465 transitions. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (2), 2 states 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 00:36:09,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:09,773 INFO L93 Difference]: Finished difference Result 683 states and 860 transitions. [2023-04-01 00:36:09,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 00:36:09,773 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2023-04-01 00:36:09,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:09,775 INFO L225 Difference]: With dead ends: 683 [2023-04-01 00:36:09,775 INFO L226 Difference]: Without dead ends: 630 [2023-04-01 00:36:09,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2023-04-01 00:36:09,776 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 2756 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2756 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:09,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2756 Valid, 1481 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 00:36:09,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2023-04-01 00:36:09,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 370. [2023-04-01 00:36:09,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 351 states have (on average 1.3133903133903133) internal successors, (461), 366 states have internal predecessors, (461), 2 states have call successors, (2), 2 states 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 00:36:09,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 464 transitions. [2023-04-01 00:36:09,803 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 464 transitions. Word has length 79 [2023-04-01 00:36:09,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:09,804 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 464 transitions. [2023-04-01 00:36:09,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (2), 2 states 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 00:36:09,804 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 464 transitions. [2023-04-01 00:36:09,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-01 00:36:09,805 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:09,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:09,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 00:36:09,805 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:09,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:09,805 INFO L85 PathProgramCache]: Analyzing trace with hash -723480935, now seen corresponding path program 1 times [2023-04-01 00:36:09,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:09,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545612683] [2023-04-01 00:36:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:09,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:10,101 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 00:36:10,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:10,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545612683] [2023-04-01 00:36:10,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545612683] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:10,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:10,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 00:36:10,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969676500] [2023-04-01 00:36:10,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:10,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 00:36:10,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:10,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 00:36:10,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 00:36:10,102 INFO L87 Difference]: Start difference. First operand 370 states and 464 transitions. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (2), 2 states 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 00:36:10,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:10,861 INFO L93 Difference]: Finished difference Result 713 states and 903 transitions. [2023-04-01 00:36:10,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 00:36:10,861 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2023-04-01 00:36:10,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:10,863 INFO L225 Difference]: With dead ends: 713 [2023-04-01 00:36:10,863 INFO L226 Difference]: Without dead ends: 638 [2023-04-01 00:36:10,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2023-04-01 00:36:10,864 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1360 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:10,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1360 Valid, 1773 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 00:36:10,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2023-04-01 00:36:10,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 370. [2023-04-01 00:36:10,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 351 states have (on average 1.3105413105413106) internal successors, (460), 366 states have internal predecessors, (460), 2 states have call successors, (2), 2 states 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 00:36:10,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 463 transitions. [2023-04-01 00:36:10,897 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 463 transitions. Word has length 79 [2023-04-01 00:36:10,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:10,897 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 463 transitions. [2023-04-01 00:36:10,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (2), 2 states 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 00:36:10,897 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 463 transitions. [2023-04-01 00:36:10,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-01 00:36:10,898 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:10,898 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] [2023-04-01 00:36:10,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 00:36:10,898 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:10,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:10,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2105855059, now seen corresponding path program 1 times [2023-04-01 00:36:10,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:10,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083374996] [2023-04-01 00:36:10,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:10,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:11,153 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 00:36:11,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:11,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083374996] [2023-04-01 00:36:11,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083374996] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:11,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:11,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 00:36:11,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950132863] [2023-04-01 00:36:11,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:11,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 00:36:11,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:11,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 00:36:11,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-01 00:36:11,155 INFO L87 Difference]: Start difference. First operand 370 states and 463 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (2), 2 states 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 00:36:11,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:11,571 INFO L93 Difference]: Finished difference Result 688 states and 836 transitions. [2023-04-01 00:36:11,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 00:36:11,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2023-04-01 00:36:11,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:11,573 INFO L225 Difference]: With dead ends: 688 [2023-04-01 00:36:11,573 INFO L226 Difference]: Without dead ends: 499 [2023-04-01 00:36:11,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-04-01 00:36:11,574 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 2636 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2636 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:11,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2636 Valid, 603 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 00:36:11,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2023-04-01 00:36:11,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 370. [2023-04-01 00:36:11,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 351 states have (on average 1.3076923076923077) internal successors, (459), 366 states have internal predecessors, (459), 2 states have call successors, (2), 2 states 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 00:36:11,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 462 transitions. [2023-04-01 00:36:11,609 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 462 transitions. Word has length 79 [2023-04-01 00:36:11,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:11,610 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 462 transitions. [2023-04-01 00:36:11,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (2), 2 states 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 00:36:11,610 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 462 transitions. [2023-04-01 00:36:11,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 00:36:11,610 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:11,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:11,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-01 00:36:11,611 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:11,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:11,611 INFO L85 PathProgramCache]: Analyzing trace with hash -183683999, now seen corresponding path program 1 times [2023-04-01 00:36:11,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:11,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688383753] [2023-04-01 00:36:11,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:11,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:11,902 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 00:36:11,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:11,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688383753] [2023-04-01 00:36:11,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688383753] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:11,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:11,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:11,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253452471] [2023-04-01 00:36:11,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:11,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:11,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:11,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:11,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:11,904 INFO L87 Difference]: Start difference. First operand 370 states and 462 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:12,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:12,622 INFO L93 Difference]: Finished difference Result 708 states and 897 transitions. [2023-04-01 00:36:12,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:36:12,623 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-01 00:36:12,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:12,625 INFO L225 Difference]: With dead ends: 708 [2023-04-01 00:36:12,625 INFO L226 Difference]: Without dead ends: 642 [2023-04-01 00:36:12,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 00:36:12,626 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 2539 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2539 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:12,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2539 Valid, 1359 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 00:36:12,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2023-04-01 00:36:12,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 370. [2023-04-01 00:36:12,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 351 states have (on average 1.3048433048433048) internal successors, (458), 366 states have internal predecessors, (458), 2 states have call successors, (2), 2 states 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 00:36:12,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 461 transitions. [2023-04-01 00:36:12,674 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 461 transitions. Word has length 81 [2023-04-01 00:36:12,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:12,675 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 461 transitions. [2023-04-01 00:36:12,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:12,675 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 461 transitions. [2023-04-01 00:36:12,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 00:36:12,675 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:12,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:12,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-01 00:36:12,676 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:12,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:12,676 INFO L85 PathProgramCache]: Analyzing trace with hash -441184552, now seen corresponding path program 1 times [2023-04-01 00:36:12,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:12,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667364287] [2023-04-01 00:36:12,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:12,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:12,893 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 00:36:12,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:12,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667364287] [2023-04-01 00:36:12,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667364287] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:12,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:12,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:12,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143580472] [2023-04-01 00:36:12,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:12,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:12,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:12,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:12,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:12,895 INFO L87 Difference]: Start difference. First operand 370 states and 461 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:13,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:13,600 INFO L93 Difference]: Finished difference Result 683 states and 857 transitions. [2023-04-01 00:36:13,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:36:13,601 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-01 00:36:13,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:13,603 INFO L225 Difference]: With dead ends: 683 [2023-04-01 00:36:13,603 INFO L226 Difference]: Without dead ends: 634 [2023-04-01 00:36:13,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 00:36:13,604 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 1228 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:13,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 1378 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 00:36:13,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2023-04-01 00:36:13,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 370. [2023-04-01 00:36:13,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 351 states have (on average 1.3019943019943019) internal successors, (457), 366 states have internal predecessors, (457), 2 states have call successors, (2), 2 states 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 00:36:13,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 460 transitions. [2023-04-01 00:36:13,644 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 460 transitions. Word has length 81 [2023-04-01 00:36:13,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:13,644 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 460 transitions. [2023-04-01 00:36:13,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:13,645 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 460 transitions. [2023-04-01 00:36:13,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 00:36:13,645 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:13,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:13,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-01 00:36:13,646 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:13,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:13,646 INFO L85 PathProgramCache]: Analyzing trace with hash 604012532, now seen corresponding path program 1 times [2023-04-01 00:36:13,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:13,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139843928] [2023-04-01 00:36:13,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:13,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:13,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:36:13,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:13,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139843928] [2023-04-01 00:36:13,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139843928] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:13,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:13,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:13,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950586057] [2023-04-01 00:36:13,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:13,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:13,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:13,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:13,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:13,860 INFO L87 Difference]: Start difference. First operand 370 states and 460 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:14,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:14,618 INFO L93 Difference]: Finished difference Result 687 states and 860 transitions. [2023-04-01 00:36:14,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:36:14,619 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-01 00:36:14,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:14,621 INFO L225 Difference]: With dead ends: 687 [2023-04-01 00:36:14,621 INFO L226 Difference]: Without dead ends: 634 [2023-04-01 00:36:14,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 00:36:14,622 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 1786 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1786 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:14,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1786 Valid, 1400 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 00:36:14,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2023-04-01 00:36:14,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 370. [2023-04-01 00:36:14,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 351 states have (on average 1.2991452991452992) internal successors, (456), 366 states have internal predecessors, (456), 2 states have call successors, (2), 2 states 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 00:36:14,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 459 transitions. [2023-04-01 00:36:14,670 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 459 transitions. Word has length 81 [2023-04-01 00:36:14,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:14,670 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 459 transitions. [2023-04-01 00:36:14,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:14,670 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 459 transitions. [2023-04-01 00:36:14,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 00:36:14,671 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:14,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:14,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-01 00:36:14,672 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:14,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:14,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1454594725, now seen corresponding path program 1 times [2023-04-01 00:36:14,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:14,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910561655] [2023-04-01 00:36:14,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:14,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:15,120 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 00:36:15,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:15,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910561655] [2023-04-01 00:36:15,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910561655] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:15,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:15,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 00:36:15,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889371068] [2023-04-01 00:36:15,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:15,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 00:36:15,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:15,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 00:36:15,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-01 00:36:15,122 INFO L87 Difference]: Start difference. First operand 370 states and 459 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:16,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:16,681 INFO L93 Difference]: Finished difference Result 1017 states and 1299 transitions. [2023-04-01 00:36:16,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-01 00:36:16,682 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-01 00:36:16,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:16,684 INFO L225 Difference]: With dead ends: 1017 [2023-04-01 00:36:16,685 INFO L226 Difference]: Without dead ends: 942 [2023-04-01 00:36:16,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-01 00:36:16,685 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 4578 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 1580 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 1757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:16,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 1727 Invalid, 1757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1580 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 00:36:16,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2023-04-01 00:36:16,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 374. [2023-04-01 00:36:16,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 355 states have (on average 1.295774647887324) internal successors, (460), 370 states have internal predecessors, (460), 2 states have call successors, (2), 2 states 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 00:36:16,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 463 transitions. [2023-04-01 00:36:16,738 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 463 transitions. Word has length 81 [2023-04-01 00:36:16,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:16,738 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 463 transitions. [2023-04-01 00:36:16,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:16,739 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 463 transitions. [2023-04-01 00:36:16,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 00:36:16,739 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:16,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:16,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-01 00:36:16,740 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:16,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:16,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1272458383, now seen corresponding path program 1 times [2023-04-01 00:36:16,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:16,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166139009] [2023-04-01 00:36:16,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:16,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:17,093 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 00:36:17,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:17,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166139009] [2023-04-01 00:36:17,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166139009] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:17,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:17,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 00:36:17,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974976617] [2023-04-01 00:36:17,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:17,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 00:36:17,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:17,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 00:36:17,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-04-01 00:36:17,097 INFO L87 Difference]: Start difference. First operand 374 states and 463 transitions. Second operand has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:18,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:18,280 INFO L93 Difference]: Finished difference Result 820 states and 1031 transitions. [2023-04-01 00:36:18,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-01 00:36:18,280 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-01 00:36:18,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:18,282 INFO L225 Difference]: With dead ends: 820 [2023-04-01 00:36:18,283 INFO L226 Difference]: Without dead ends: 700 [2023-04-01 00:36:18,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2023-04-01 00:36:18,283 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 2415 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 1733 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2415 SdHoareTripleChecker+Valid, 2045 SdHoareTripleChecker+Invalid, 1766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:18,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2415 Valid, 2045 Invalid, 1766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1733 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 00:36:18,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-04-01 00:36:18,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 374. [2023-04-01 00:36:18,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 355 states have (on average 1.2929577464788733) internal successors, (459), 370 states have internal predecessors, (459), 2 states have call successors, (2), 2 states 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 00:36:18,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 462 transitions. [2023-04-01 00:36:18,340 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 462 transitions. Word has length 81 [2023-04-01 00:36:18,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:18,340 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 462 transitions. [2023-04-01 00:36:18,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:18,340 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 462 transitions. [2023-04-01 00:36:18,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-01 00:36:18,341 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:18,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:18,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-01 00:36:18,341 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:18,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:18,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1103307681, now seen corresponding path program 1 times [2023-04-01 00:36:18,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:18,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621472956] [2023-04-01 00:36:18,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:18,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:18,546 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 00:36:18,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:18,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621472956] [2023-04-01 00:36:18,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621472956] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:18,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:18,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:18,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282697711] [2023-04-01 00:36:18,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:18,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:18,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:18,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:18,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:18,547 INFO L87 Difference]: Start difference. First operand 374 states and 462 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:19,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:19,357 INFO L93 Difference]: Finished difference Result 717 states and 901 transitions. [2023-04-01 00:36:19,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:36:19,358 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2023-04-01 00:36:19,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:19,360 INFO L225 Difference]: With dead ends: 717 [2023-04-01 00:36:19,360 INFO L226 Difference]: Without dead ends: 642 [2023-04-01 00:36:19,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 00:36:19,360 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 2112 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2112 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:19,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2112 Valid, 1669 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 00:36:19,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2023-04-01 00:36:19,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 370. [2023-04-01 00:36:19,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 351 states have (on average 1.2934472934472934) internal successors, (454), 366 states have internal predecessors, (454), 2 states have call successors, (2), 2 states 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 00:36:19,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 457 transitions. [2023-04-01 00:36:19,417 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 457 transitions. Word has length 82 [2023-04-01 00:36:19,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:19,417 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 457 transitions. [2023-04-01 00:36:19,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:19,417 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 457 transitions. [2023-04-01 00:36:19,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 00:36:19,418 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:19,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:19,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-01 00:36:19,418 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:19,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:19,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1818901785, now seen corresponding path program 1 times [2023-04-01 00:36:19,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:19,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841257645] [2023-04-01 00:36:19,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:19,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:19,624 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 00:36:19,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:19,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841257645] [2023-04-01 00:36:19,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841257645] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:19,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:19,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:19,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751929966] [2023-04-01 00:36:19,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:19,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:19,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:19,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:19,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:19,626 INFO L87 Difference]: Start difference. First operand 370 states and 457 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:20,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:20,363 INFO L93 Difference]: Finished difference Result 661 states and 817 transitions. [2023-04-01 00:36:20,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:36:20,363 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 00:36:20,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:20,365 INFO L225 Difference]: With dead ends: 661 [2023-04-01 00:36:20,365 INFO L226 Difference]: Without dead ends: 618 [2023-04-01 00:36:20,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 00:36:20,366 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 1781 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1781 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:20,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1781 Valid, 1332 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 00:36:20,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-04-01 00:36:20,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 370. [2023-04-01 00:36:20,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 351 states have (on average 1.2905982905982907) internal successors, (453), 366 states have internal predecessors, (453), 2 states have call successors, (2), 2 states 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 00:36:20,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 456 transitions. [2023-04-01 00:36:20,430 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 456 transitions. Word has length 83 [2023-04-01 00:36:20,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:20,430 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 456 transitions. [2023-04-01 00:36:20,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:20,431 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 456 transitions. [2023-04-01 00:36:20,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 00:36:20,434 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:20,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:20,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-01 00:36:20,434 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:20,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:20,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1513026241, now seen corresponding path program 1 times [2023-04-01 00:36:20,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:20,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252609520] [2023-04-01 00:36:20,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:20,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:20,666 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 00:36:20,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:20,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252609520] [2023-04-01 00:36:20,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252609520] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:20,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:20,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:20,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114037761] [2023-04-01 00:36:20,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:20,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:20,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:20,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:20,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:20,669 INFO L87 Difference]: Start difference. First operand 370 states and 456 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:21,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:21,414 INFO L93 Difference]: Finished difference Result 659 states and 813 transitions. [2023-04-01 00:36:21,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:36:21,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 00:36:21,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:21,416 INFO L225 Difference]: With dead ends: 659 [2023-04-01 00:36:21,416 INFO L226 Difference]: Without dead ends: 618 [2023-04-01 00:36:21,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 00:36:21,417 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 2358 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2358 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:21,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2358 Valid, 1297 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 00:36:21,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-04-01 00:36:21,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 370. [2023-04-01 00:36:21,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 351 states have (on average 1.2877492877492878) internal successors, (452), 366 states have internal predecessors, (452), 2 states have call successors, (2), 2 states 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 00:36:21,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 455 transitions. [2023-04-01 00:36:21,485 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 455 transitions. Word has length 83 [2023-04-01 00:36:21,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:21,485 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 455 transitions. [2023-04-01 00:36:21,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:21,485 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 455 transitions. [2023-04-01 00:36:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 00:36:21,486 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:21,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:21,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-01 00:36:21,486 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:21,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:21,487 INFO L85 PathProgramCache]: Analyzing trace with hash -399347275, now seen corresponding path program 1 times [2023-04-01 00:36:21,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:21,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731059006] [2023-04-01 00:36:21,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:21,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:21,704 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 00:36:21,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:21,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731059006] [2023-04-01 00:36:21,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731059006] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:21,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:21,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:21,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973146641] [2023-04-01 00:36:21,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:21,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:21,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:21,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:21,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:21,707 INFO L87 Difference]: Start difference. First operand 370 states and 455 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:22,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:22,439 INFO L93 Difference]: Finished difference Result 661 states and 814 transitions. [2023-04-01 00:36:22,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:36:22,439 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 00:36:22,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:22,441 INFO L225 Difference]: With dead ends: 661 [2023-04-01 00:36:22,441 INFO L226 Difference]: Without dead ends: 618 [2023-04-01 00:36:22,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 00:36:22,443 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 2341 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2341 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:22,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2341 Valid, 1327 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 00:36:22,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-04-01 00:36:22,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 370. [2023-04-01 00:36:22,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 351 states have (on average 1.2849002849002849) internal successors, (451), 366 states have internal predecessors, (451), 2 states have call successors, (2), 2 states 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 00:36:22,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 454 transitions. [2023-04-01 00:36:22,515 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 454 transitions. Word has length 83 [2023-04-01 00:36:22,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:22,516 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 454 transitions. [2023-04-01 00:36:22,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:22,516 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 454 transitions. [2023-04-01 00:36:22,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 00:36:22,517 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:22,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:22,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-01 00:36:22,517 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:22,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:22,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1672846803, now seen corresponding path program 1 times [2023-04-01 00:36:22,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:22,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158387857] [2023-04-01 00:36:22,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:22,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:22,787 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 00:36:22,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:22,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158387857] [2023-04-01 00:36:22,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158387857] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:22,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:22,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:22,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263714076] [2023-04-01 00:36:22,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:22,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:22,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:22,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:22,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:22,789 INFO L87 Difference]: Start difference. First operand 370 states and 454 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:23,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:23,538 INFO L93 Difference]: Finished difference Result 623 states and 761 transitions. [2023-04-01 00:36:23,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:36:23,539 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 00:36:23,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:23,541 INFO L225 Difference]: With dead ends: 623 [2023-04-01 00:36:23,541 INFO L226 Difference]: Without dead ends: 618 [2023-04-01 00:36:23,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 00:36:23,541 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 1184 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:23,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 1376 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 00:36:23,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-04-01 00:36:23,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 370. [2023-04-01 00:36:23,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 351 states have (on average 1.2820512820512822) internal successors, (450), 366 states have internal predecessors, (450), 2 states have call successors, (2), 2 states 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 00:36:23,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 453 transitions. [2023-04-01 00:36:23,608 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 453 transitions. Word has length 83 [2023-04-01 00:36:23,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:23,608 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 453 transitions. [2023-04-01 00:36:23,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:23,608 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 453 transitions. [2023-04-01 00:36:23,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 00:36:23,609 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:23,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:23,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-01 00:36:23,609 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:23,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:23,609 INFO L85 PathProgramCache]: Analyzing trace with hash 994334574, now seen corresponding path program 1 times [2023-04-01 00:36:23,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:23,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607319276] [2023-04-01 00:36:23,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:23,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:23,830 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 00:36:23,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:23,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607319276] [2023-04-01 00:36:23,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607319276] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:23,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:23,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:23,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859018734] [2023-04-01 00:36:23,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:23,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:23,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:23,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:23,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:23,831 INFO L87 Difference]: Start difference. First operand 370 states and 453 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:24,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:24,578 INFO L93 Difference]: Finished difference Result 664 states and 814 transitions. [2023-04-01 00:36:24,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:36:24,580 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 00:36:24,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:24,582 INFO L225 Difference]: With dead ends: 664 [2023-04-01 00:36:24,582 INFO L226 Difference]: Without dead ends: 618 [2023-04-01 00:36:24,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 00:36:24,583 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 2327 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2327 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:24,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2327 Valid, 1350 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 00:36:24,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-04-01 00:36:24,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 370. [2023-04-01 00:36:24,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 351 states have (on average 1.2792022792022792) internal successors, (449), 366 states have internal predecessors, (449), 2 states have call successors, (2), 2 states 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 00:36:24,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 452 transitions. [2023-04-01 00:36:24,659 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 452 transitions. Word has length 83 [2023-04-01 00:36:24,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:24,660 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 452 transitions. [2023-04-01 00:36:24,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:24,660 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 452 transitions. [2023-04-01 00:36:24,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 00:36:24,660 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:24,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:24,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-01 00:36:24,661 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:24,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:24,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1371476210, now seen corresponding path program 1 times [2023-04-01 00:36:24,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:24,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630926049] [2023-04-01 00:36:24,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:24,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:24,840 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 00:36:24,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:24,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630926049] [2023-04-01 00:36:24,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630926049] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:24,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:24,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:24,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695115043] [2023-04-01 00:36:24,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:24,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:24,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:24,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:24,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:24,843 INFO L87 Difference]: Start difference. First operand 370 states and 452 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:25,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:25,573 INFO L93 Difference]: Finished difference Result 692 states and 853 transitions. [2023-04-01 00:36:25,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:36:25,574 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 00:36:25,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:25,576 INFO L225 Difference]: With dead ends: 692 [2023-04-01 00:36:25,576 INFO L226 Difference]: Without dead ends: 634 [2023-04-01 00:36:25,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 00:36:25,576 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 1643 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:25,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1643 Valid, 1523 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 00:36:25,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2023-04-01 00:36:25,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 370. [2023-04-01 00:36:25,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 351 states have (on average 1.2763532763532763) internal successors, (448), 366 states have internal predecessors, (448), 2 states have call successors, (2), 2 states 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 00:36:25,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 451 transitions. [2023-04-01 00:36:25,648 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 451 transitions. Word has length 83 [2023-04-01 00:36:25,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:25,649 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 451 transitions. [2023-04-01 00:36:25,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:25,649 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 451 transitions. [2023-04-01 00:36:25,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 00:36:25,649 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:25,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:25,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-01 00:36:25,650 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:25,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:25,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1958247223, now seen corresponding path program 1 times [2023-04-01 00:36:25,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:25,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111774843] [2023-04-01 00:36:25,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:25,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:25,868 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 00:36:25,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:25,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111774843] [2023-04-01 00:36:25,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111774843] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:25,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:25,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:25,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356705036] [2023-04-01 00:36:25,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:25,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:25,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:25,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:25,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:25,870 INFO L87 Difference]: Start difference. First operand 370 states and 451 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:26,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:26,656 INFO L93 Difference]: Finished difference Result 661 states and 809 transitions. [2023-04-01 00:36:26,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:36:26,657 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 00:36:26,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:26,658 INFO L225 Difference]: With dead ends: 661 [2023-04-01 00:36:26,658 INFO L226 Difference]: Without dead ends: 618 [2023-04-01 00:36:26,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 00:36:26,659 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 2170 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2170 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:26,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2170 Valid, 1421 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 00:36:26,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-04-01 00:36:26,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 370. [2023-04-01 00:36:26,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 351 states have (on average 1.2735042735042734) internal successors, (447), 366 states have internal predecessors, (447), 2 states have call successors, (2), 2 states 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 00:36:26,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 450 transitions. [2023-04-01 00:36:26,729 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 450 transitions. Word has length 83 [2023-04-01 00:36:26,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:26,729 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 450 transitions. [2023-04-01 00:36:26,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:26,730 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 450 transitions. [2023-04-01 00:36:26,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 00:36:26,730 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:26,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:26,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-01 00:36:26,730 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:26,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:26,731 INFO L85 PathProgramCache]: Analyzing trace with hash -166880030, now seen corresponding path program 1 times [2023-04-01 00:36:26,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:26,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501974476] [2023-04-01 00:36:26,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:26,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:26,907 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 00:36:26,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:26,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501974476] [2023-04-01 00:36:26,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501974476] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:26,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:26,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:26,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040671235] [2023-04-01 00:36:26,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:26,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:26,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:26,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:26,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:26,909 INFO L87 Difference]: Start difference. First operand 370 states and 450 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:27,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:27,695 INFO L93 Difference]: Finished difference Result 664 states and 811 transitions. [2023-04-01 00:36:27,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:36:27,695 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 00:36:27,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:27,697 INFO L225 Difference]: With dead ends: 664 [2023-04-01 00:36:27,697 INFO L226 Difference]: Without dead ends: 618 [2023-04-01 00:36:27,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 00:36:27,698 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 1877 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1877 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:27,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1877 Valid, 1425 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 00:36:27,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-04-01 00:36:27,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 370. [2023-04-01 00:36:27,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 351 states have (on average 1.2706552706552707) internal successors, (446), 366 states have internal predecessors, (446), 2 states have call successors, (2), 2 states 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 00:36:27,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 449 transitions. [2023-04-01 00:36:27,770 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 449 transitions. Word has length 83 [2023-04-01 00:36:27,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:27,770 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 449 transitions. [2023-04-01 00:36:27,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:27,770 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 449 transitions. [2023-04-01 00:36:27,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 00:36:27,771 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:27,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:27,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-01 00:36:27,771 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:27,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:27,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1703591186, now seen corresponding path program 1 times [2023-04-01 00:36:27,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:27,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694486566] [2023-04-01 00:36:27,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:27,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:27,970 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 00:36:27,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:27,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694486566] [2023-04-01 00:36:27,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694486566] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:27,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:27,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:27,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818699726] [2023-04-01 00:36:27,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:27,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:27,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:27,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:27,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:27,973 INFO L87 Difference]: Start difference. First operand 370 states and 449 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:28,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:28,729 INFO L93 Difference]: Finished difference Result 664 states and 809 transitions. [2023-04-01 00:36:28,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:36:28,729 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 00:36:28,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:28,731 INFO L225 Difference]: With dead ends: 664 [2023-04-01 00:36:28,731 INFO L226 Difference]: Without dead ends: 618 [2023-04-01 00:36:28,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 00:36:28,731 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 2252 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2252 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:28,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2252 Valid, 1402 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 00:36:28,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-04-01 00:36:28,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 370. [2023-04-01 00:36:28,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 351 states have (on average 1.2678062678062678) internal successors, (445), 366 states have internal predecessors, (445), 2 states have call successors, (2), 2 states 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 00:36:28,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 448 transitions. [2023-04-01 00:36:28,806 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 448 transitions. Word has length 83 [2023-04-01 00:36:28,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:28,806 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 448 transitions. [2023-04-01 00:36:28,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:28,806 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 448 transitions. [2023-04-01 00:36:28,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 00:36:28,807 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:28,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:28,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-01 00:36:28,807 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:28,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:28,807 INFO L85 PathProgramCache]: Analyzing trace with hash 225565326, now seen corresponding path program 1 times [2023-04-01 00:36:28,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:28,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451998545] [2023-04-01 00:36:28,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:28,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:28,985 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 00:36:28,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:28,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451998545] [2023-04-01 00:36:28,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451998545] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:28,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:28,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:28,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938561980] [2023-04-01 00:36:28,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:28,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:28,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:28,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:28,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:28,987 INFO L87 Difference]: Start difference. First operand 370 states and 448 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:29,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:29,716 INFO L93 Difference]: Finished difference Result 692 states and 848 transitions. [2023-04-01 00:36:29,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:36:29,716 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 00:36:29,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:29,718 INFO L225 Difference]: With dead ends: 692 [2023-04-01 00:36:29,718 INFO L226 Difference]: Without dead ends: 634 [2023-04-01 00:36:29,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 00:36:29,719 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1143 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:29,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 1525 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 00:36:29,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2023-04-01 00:36:29,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 370. [2023-04-01 00:36:29,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 351 states have (on average 1.264957264957265) internal successors, (444), 366 states have internal predecessors, (444), 2 states have call successors, (2), 2 states 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 00:36:29,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 447 transitions. [2023-04-01 00:36:29,800 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 447 transitions. Word has length 83 [2023-04-01 00:36:29,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:29,800 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 447 transitions. [2023-04-01 00:36:29,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:29,801 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 447 transitions. [2023-04-01 00:36:29,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 00:36:29,801 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:29,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:29,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-01 00:36:29,802 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:29,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:29,802 INFO L85 PathProgramCache]: Analyzing trace with hash 808532232, now seen corresponding path program 1 times [2023-04-01 00:36:29,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:29,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105187306] [2023-04-01 00:36:29,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:29,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:30,128 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 00:36:30,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:30,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105187306] [2023-04-01 00:36:30,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105187306] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:30,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:30,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 00:36:30,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213476701] [2023-04-01 00:36:30,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:30,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 00:36:30,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:30,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 00:36:30,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-01 00:36:30,129 INFO L87 Difference]: Start difference. First operand 370 states and 447 transitions. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 11 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:31,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:31,892 INFO L93 Difference]: Finished difference Result 1022 states and 1280 transitions. [2023-04-01 00:36:31,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-01 00:36:31,892 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 11 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 00:36:31,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:31,894 INFO L225 Difference]: With dead ends: 1022 [2023-04-01 00:36:31,894 INFO L226 Difference]: Without dead ends: 941 [2023-04-01 00:36:31,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-01 00:36:31,895 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 3893 mSDsluCounter, 1932 mSDsCounter, 0 mSdLazyCounter, 2020 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3893 SdHoareTripleChecker+Valid, 2416 SdHoareTripleChecker+Invalid, 2165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 2020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:31,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3893 Valid, 2416 Invalid, 2165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 2020 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 00:36:31,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2023-04-01 00:36:31,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 374. [2023-04-01 00:36:31,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 355 states have (on average 1.2619718309859156) internal successors, (448), 370 states have internal predecessors, (448), 2 states have call successors, (2), 2 states 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 00:36:31,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 451 transitions. [2023-04-01 00:36:31,976 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 451 transitions. Word has length 83 [2023-04-01 00:36:31,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:31,976 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 451 transitions. [2023-04-01 00:36:31,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 11 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:31,977 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 451 transitions. [2023-04-01 00:36:31,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 00:36:31,977 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:31,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:31,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-01 00:36:31,977 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:31,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:31,978 INFO L85 PathProgramCache]: Analyzing trace with hash 444888107, now seen corresponding path program 1 times [2023-04-01 00:36:31,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:31,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155085471] [2023-04-01 00:36:31,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:31,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:32,182 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 00:36:32,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:32,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155085471] [2023-04-01 00:36:32,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155085471] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:32,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:32,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:32,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455034777] [2023-04-01 00:36:32,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:32,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:32,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:32,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:32,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:32,184 INFO L87 Difference]: Start difference. First operand 374 states and 451 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:32,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:32,942 INFO L93 Difference]: Finished difference Result 627 states and 756 transitions. [2023-04-01 00:36:32,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:36:32,942 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 00:36:32,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:32,944 INFO L225 Difference]: With dead ends: 627 [2023-04-01 00:36:32,944 INFO L226 Difference]: Without dead ends: 622 [2023-04-01 00:36:32,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 00:36:32,945 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 2184 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2184 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:32,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2184 Valid, 1455 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 00:36:32,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2023-04-01 00:36:33,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 374. [2023-04-01 00:36:33,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 355 states have (on average 1.2591549295774649) internal successors, (447), 370 states have internal predecessors, (447), 2 states have call successors, (2), 2 states 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 00:36:33,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 450 transitions. [2023-04-01 00:36:33,037 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 450 transitions. Word has length 83 [2023-04-01 00:36:33,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:33,038 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 450 transitions. [2023-04-01 00:36:33,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:33,038 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 450 transitions. [2023-04-01 00:36:33,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 00:36:33,038 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:33,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:33,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-01 00:36:33,039 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:33,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:33,039 INFO L85 PathProgramCache]: Analyzing trace with hash 59839946, now seen corresponding path program 1 times [2023-04-01 00:36:33,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:33,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009864865] [2023-04-01 00:36:33,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:33,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:33,206 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 00:36:33,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:33,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009864865] [2023-04-01 00:36:33,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009864865] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:33,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:33,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:33,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950339865] [2023-04-01 00:36:33,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:33,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:33,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:33,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:33,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:33,208 INFO L87 Difference]: Start difference. First operand 374 states and 450 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:33,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:33,980 INFO L93 Difference]: Finished difference Result 655 states and 794 transitions. [2023-04-01 00:36:33,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:36:33,980 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 00:36:33,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:33,982 INFO L225 Difference]: With dead ends: 655 [2023-04-01 00:36:33,982 INFO L226 Difference]: Without dead ends: 638 [2023-04-01 00:36:33,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 00:36:33,982 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 1109 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:33,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 1527 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 00:36:33,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2023-04-01 00:36:34,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 374. [2023-04-01 00:36:34,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 355 states have (on average 1.2563380281690142) internal successors, (446), 370 states have internal predecessors, (446), 2 states have call successors, (2), 2 states 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 00:36:34,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 449 transitions. [2023-04-01 00:36:34,064 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 449 transitions. Word has length 83 [2023-04-01 00:36:34,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:34,064 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 449 transitions. [2023-04-01 00:36:34,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:34,065 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 449 transitions. [2023-04-01 00:36:34,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 00:36:34,065 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:34,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:34,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-01 00:36:34,065 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:34,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:34,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1533137029, now seen corresponding path program 1 times [2023-04-01 00:36:34,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:34,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019029261] [2023-04-01 00:36:34,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:34,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:34,269 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 00:36:34,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:34,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019029261] [2023-04-01 00:36:34,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019029261] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:34,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:34,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:34,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187758152] [2023-04-01 00:36:34,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:34,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:34,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:34,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:34,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:34,270 INFO L87 Difference]: Start difference. First operand 374 states and 449 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:35,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:35,074 INFO L93 Difference]: Finished difference Result 665 states and 806 transitions. [2023-04-01 00:36:35,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:36:35,074 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 00:36:35,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:35,076 INFO L225 Difference]: With dead ends: 665 [2023-04-01 00:36:35,076 INFO L226 Difference]: Without dead ends: 622 [2023-04-01 00:36:35,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 00:36:35,077 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 2115 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2115 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:35,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2115 Valid, 1495 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 00:36:35,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2023-04-01 00:36:35,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 374. [2023-04-01 00:36:35,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 355 states have (on average 1.2535211267605635) internal successors, (445), 370 states have internal predecessors, (445), 2 states have call successors, (2), 2 states 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 00:36:35,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 448 transitions. [2023-04-01 00:36:35,160 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 448 transitions. Word has length 83 [2023-04-01 00:36:35,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:35,161 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 448 transitions. [2023-04-01 00:36:35,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:35,161 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 448 transitions. [2023-04-01 00:36:35,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 00:36:35,161 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:35,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:35,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-04-01 00:36:35,162 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:35,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:35,162 INFO L85 PathProgramCache]: Analyzing trace with hash 259287965, now seen corresponding path program 1 times [2023-04-01 00:36:35,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:35,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596729104] [2023-04-01 00:36:35,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:35,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:35,346 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 00:36:35,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:35,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596729104] [2023-04-01 00:36:35,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596729104] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:35,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:35,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:35,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541747764] [2023-04-01 00:36:35,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:35,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:35,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:35,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:35,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:35,347 INFO L87 Difference]: Start difference. First operand 374 states and 448 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:36,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:36,124 INFO L93 Difference]: Finished difference Result 627 states and 753 transitions. [2023-04-01 00:36:36,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:36:36,124 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 00:36:36,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:36,126 INFO L225 Difference]: With dead ends: 627 [2023-04-01 00:36:36,126 INFO L226 Difference]: Without dead ends: 622 [2023-04-01 00:36:36,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 00:36:36,127 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1098 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:36,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 1545 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 00:36:36,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2023-04-01 00:36:36,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 374. [2023-04-01 00:36:36,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 355 states have (on average 1.2507042253521128) internal successors, (444), 370 states have internal predecessors, (444), 2 states have call successors, (2), 2 states 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 00:36:36,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 447 transitions. [2023-04-01 00:36:36,219 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 447 transitions. Word has length 83 [2023-04-01 00:36:36,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:36,220 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 447 transitions. [2023-04-01 00:36:36,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:36,220 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 447 transitions. [2023-04-01 00:36:36,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-01 00:36:36,220 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:36,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:36,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-04-01 00:36:36,221 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:36,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:36,221 INFO L85 PathProgramCache]: Analyzing trace with hash 2086455091, now seen corresponding path program 1 times [2023-04-01 00:36:36,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:36,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765662518] [2023-04-01 00:36:36,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:36,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:36,392 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 00:36:36,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:36,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765662518] [2023-04-01 00:36:36,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765662518] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:36,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:36,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:36,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875662566] [2023-04-01 00:36:36,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:36,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:36,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:36,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:36,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:36,394 INFO L87 Difference]: Start difference. First operand 374 states and 447 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:37,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:37,188 INFO L93 Difference]: Finished difference Result 723 states and 884 transitions. [2023-04-01 00:36:37,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:36:37,189 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2023-04-01 00:36:37,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:37,190 INFO L225 Difference]: With dead ends: 723 [2023-04-01 00:36:37,190 INFO L226 Difference]: Without dead ends: 642 [2023-04-01 00:36:37,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 00:36:37,191 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1542 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:37,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 1665 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 00:36:37,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2023-04-01 00:36:37,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 370. [2023-04-01 00:36:37,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 351 states have (on average 1.2507122507122508) internal successors, (439), 366 states have internal predecessors, (439), 2 states have call successors, (2), 2 states 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 00:36:37,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 442 transitions. [2023-04-01 00:36:37,278 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 442 transitions. Word has length 84 [2023-04-01 00:36:37,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:37,278 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 442 transitions. [2023-04-01 00:36:37,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:37,278 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 442 transitions. [2023-04-01 00:36:37,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-01 00:36:37,279 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:37,279 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] [2023-04-01 00:36:37,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-04-01 00:36:37,279 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:37,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:37,279 INFO L85 PathProgramCache]: Analyzing trace with hash 904851723, now seen corresponding path program 1 times [2023-04-01 00:36:37,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:37,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629968236] [2023-04-01 00:36:37,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:37,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:37,696 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 00:36:37,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:37,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629968236] [2023-04-01 00:36:37,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629968236] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:37,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:37,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 00:36:37,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302655685] [2023-04-01 00:36:37,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:37,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 00:36:37,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:37,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 00:36:37,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-01 00:36:37,698 INFO L87 Difference]: Start difference. First operand 370 states and 442 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:38,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:38,653 INFO L93 Difference]: Finished difference Result 830 states and 1022 transitions. [2023-04-01 00:36:38,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 00:36:38,653 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2023-04-01 00:36:38,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:38,655 INFO L225 Difference]: With dead ends: 830 [2023-04-01 00:36:38,655 INFO L226 Difference]: Without dead ends: 741 [2023-04-01 00:36:38,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-01 00:36:38,657 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 1972 mSDsluCounter, 3193 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1972 SdHoareTripleChecker+Valid, 3900 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:38,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1972 Valid, 3900 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 00:36:38,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2023-04-01 00:36:38,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 322. [2023-04-01 00:36:38,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 304 states have (on average 1.2401315789473684) internal successors, (377), 318 states have internal predecessors, (377), 2 states have call successors, (2), 2 states 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 00:36:38,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 380 transitions. [2023-04-01 00:36:38,755 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 380 transitions. Word has length 85 [2023-04-01 00:36:38,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:38,755 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 380 transitions. [2023-04-01 00:36:38,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:38,755 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 380 transitions. [2023-04-01 00:36:38,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-01 00:36:38,756 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:38,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:38,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-04-01 00:36:38,756 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:38,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:38,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1097242642, now seen corresponding path program 1 times [2023-04-01 00:36:38,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:38,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037468112] [2023-04-01 00:36:38,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:38,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:39,129 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 00:36:39,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:39,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037468112] [2023-04-01 00:36:39,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037468112] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:39,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:39,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-01 00:36:39,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646171283] [2023-04-01 00:36:39,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:39,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 00:36:39,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:39,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 00:36:39,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-01 00:36:39,131 INFO L87 Difference]: Start difference. First operand 322 states and 380 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:39,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:39,831 INFO L93 Difference]: Finished difference Result 739 states and 867 transitions. [2023-04-01 00:36:39,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 00:36:39,831 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2023-04-01 00:36:39,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:39,833 INFO L225 Difference]: With dead ends: 739 [2023-04-01 00:36:39,833 INFO L226 Difference]: Without dead ends: 629 [2023-04-01 00:36:39,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2023-04-01 00:36:39,835 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 1915 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:39,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1915 Valid, 1397 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:36:39,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2023-04-01 00:36:39,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 253. [2023-04-01 00:36:39,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 239 states have (on average 1.2217573221757323) internal successors, (292), 249 states have internal predecessors, (292), 2 states have call successors, (2), 2 states 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 00:36:39,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 295 transitions. [2023-04-01 00:36:39,917 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 295 transitions. Word has length 85 [2023-04-01 00:36:39,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:39,917 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 295 transitions. [2023-04-01 00:36:39,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:39,918 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 295 transitions. [2023-04-01 00:36:39,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-01 00:36:39,918 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:39,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:39,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-04-01 00:36:39,918 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:39,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:39,919 INFO L85 PathProgramCache]: Analyzing trace with hash 984069193, now seen corresponding path program 1 times [2023-04-01 00:36:39,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:39,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129524251] [2023-04-01 00:36:39,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:39,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:40,338 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 00:36:40,339 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:40,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129524251] [2023-04-01 00:36:40,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129524251] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:40,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:40,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 00:36:40,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112393585] [2023-04-01 00:36:40,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:40,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 00:36:40,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:40,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 00:36:40,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-01 00:36:40,340 INFO L87 Difference]: Start difference. First operand 253 states and 295 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:41,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:41,335 INFO L93 Difference]: Finished difference Result 628 states and 771 transitions. [2023-04-01 00:36:41,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 00:36:41,335 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2023-04-01 00:36:41,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:41,337 INFO L225 Difference]: With dead ends: 628 [2023-04-01 00:36:41,337 INFO L226 Difference]: Without dead ends: 554 [2023-04-01 00:36:41,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-01 00:36:41,338 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 1535 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 2360 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:41,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 2360 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:36:41,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-04-01 00:36:41,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 220. [2023-04-01 00:36:41,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 209 states have (on average 1.2057416267942584) internal successors, (252), 216 states have internal predecessors, (252), 2 states have call successors, (2), 2 states 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 00:36:41,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 255 transitions. [2023-04-01 00:36:41,424 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 255 transitions. Word has length 85 [2023-04-01 00:36:41,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:41,425 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 255 transitions. [2023-04-01 00:36:41,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:41,425 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 255 transitions. [2023-04-01 00:36:41,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-01 00:36:41,425 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:41,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:41,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-04-01 00:36:41,425 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:41,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:41,426 INFO L85 PathProgramCache]: Analyzing trace with hash -521817191, now seen corresponding path program 1 times [2023-04-01 00:36:41,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:41,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388865450] [2023-04-01 00:36:41,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:41,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:41,814 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 00:36:41,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:41,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388865450] [2023-04-01 00:36:41,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388865450] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:41,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:41,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 00:36:41,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144859769] [2023-04-01 00:36:41,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:41,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 00:36:41,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:41,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 00:36:41,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-01 00:36:41,815 INFO L87 Difference]: Start difference. First operand 220 states and 255 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:42,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:42,498 INFO L93 Difference]: Finished difference Result 360 states and 424 transitions. [2023-04-01 00:36:42,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 00:36:42,499 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2023-04-01 00:36:42,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:42,500 INFO L225 Difference]: With dead ends: 360 [2023-04-01 00:36:42,500 INFO L226 Difference]: Without dead ends: 315 [2023-04-01 00:36:42,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2023-04-01 00:36:42,501 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 1267 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:42,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1267 Valid, 1380 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:36:42,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-04-01 00:36:42,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 216. [2023-04-01 00:36:42,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 206 states have (on average 1.1990291262135921) internal successors, (247), 212 states have internal predecessors, (247), 2 states have call successors, (2), 2 states 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 00:36:42,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 250 transitions. [2023-04-01 00:36:42,599 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 250 transitions. Word has length 85 [2023-04-01 00:36:42,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:42,599 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 250 transitions. [2023-04-01 00:36:42,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:42,599 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 250 transitions. [2023-04-01 00:36:42,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-01 00:36:42,600 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:42,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:42,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-04-01 00:36:42,600 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:42,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:42,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1336837799, now seen corresponding path program 1 times [2023-04-01 00:36:42,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:42,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296518922] [2023-04-01 00:36:42,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:42,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:42,952 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 00:36:42,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:42,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296518922] [2023-04-01 00:36:42,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296518922] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:42,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:42,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 00:36:42,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231118492] [2023-04-01 00:36:42,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:42,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 00:36:42,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:42,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 00:36:42,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-01 00:36:42,954 INFO L87 Difference]: Start difference. First operand 216 states and 250 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:43,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:43,692 INFO L93 Difference]: Finished difference Result 515 states and 624 transitions. [2023-04-01 00:36:43,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 00:36:43,692 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2023-04-01 00:36:43,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:43,694 INFO L225 Difference]: With dead ends: 515 [2023-04-01 00:36:43,694 INFO L226 Difference]: Without dead ends: 411 [2023-04-01 00:36:43,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-01 00:36:43,694 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 985 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:43,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 1905 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:36:43,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-04-01 00:36:43,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 153. [2023-04-01 00:36:43,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 147 states have (on average 1.1700680272108843) internal successors, (172), 149 states have internal predecessors, (172), 2 states have call successors, (2), 2 states 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 00:36:43,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 175 transitions. [2023-04-01 00:36:43,773 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 175 transitions. Word has length 85 [2023-04-01 00:36:43,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:43,773 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 175 transitions. [2023-04-01 00:36:43,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:43,773 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 175 transitions. [2023-04-01 00:36:43,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-01 00:36:43,773 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:43,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:43,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-04-01 00:36:43,774 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:43,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:43,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1450332726, now seen corresponding path program 1 times [2023-04-01 00:36:43,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:43,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547255780] [2023-04-01 00:36:43,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:43,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:43,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:36:43,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:43,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547255780] [2023-04-01 00:36:43,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547255780] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:43,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:43,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:43,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552909631] [2023-04-01 00:36:43,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:43,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:43,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:43,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:43,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:43,940 INFO L87 Difference]: Start difference. First operand 153 states and 175 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:44,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:44,341 INFO L93 Difference]: Finished difference Result 292 states and 348 transitions. [2023-04-01 00:36:44,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 00:36:44,342 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2023-04-01 00:36:44,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:44,342 INFO L225 Difference]: With dead ends: 292 [2023-04-01 00:36:44,342 INFO L226 Difference]: Without dead ends: 233 [2023-04-01 00:36:44,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2023-04-01 00:36:44,343 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 607 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:44,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 507 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:36:44,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-04-01 00:36:44,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 153. [2023-04-01 00:36:44,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 147 states have (on average 1.163265306122449) internal successors, (171), 149 states have internal predecessors, (171), 2 states have call successors, (2), 2 states 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 00:36:44,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 174 transitions. [2023-04-01 00:36:44,422 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 174 transitions. Word has length 86 [2023-04-01 00:36:44,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:44,422 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 174 transitions. [2023-04-01 00:36:44,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:44,422 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 174 transitions. [2023-04-01 00:36:44,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-01 00:36:44,422 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:44,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:44,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-04-01 00:36:44,423 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:44,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:44,423 INFO L85 PathProgramCache]: Analyzing trace with hash -50595155, now seen corresponding path program 1 times [2023-04-01 00:36:44,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:44,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590344596] [2023-04-01 00:36:44,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:44,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:44,618 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 00:36:44,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:44,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590344596] [2023-04-01 00:36:44,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590344596] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:44,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:44,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:36:44,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101667565] [2023-04-01 00:36:44,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:44,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:36:44,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:44,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:36:44,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:36:44,620 INFO L87 Difference]: Start difference. First operand 153 states and 174 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:45,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:45,025 INFO L93 Difference]: Finished difference Result 222 states and 257 transitions. [2023-04-01 00:36:45,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 00:36:45,026 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2023-04-01 00:36:45,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:45,027 INFO L225 Difference]: With dead ends: 222 [2023-04-01 00:36:45,027 INFO L226 Difference]: Without dead ends: 215 [2023-04-01 00:36:45,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2023-04-01 00:36:45,027 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 686 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:45,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 561 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:36:45,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-04-01 00:36:45,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 153. [2023-04-01 00:36:45,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 147 states have (on average 1.1564625850340136) internal successors, (170), 149 states have internal predecessors, (170), 2 states have call successors, (2), 2 states 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 00:36:45,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 173 transitions. [2023-04-01 00:36:45,107 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 173 transitions. Word has length 86 [2023-04-01 00:36:45,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:45,108 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 173 transitions. [2023-04-01 00:36:45,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:45,108 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 173 transitions. [2023-04-01 00:36:45,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-01 00:36:45,108 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:45,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:45,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-04-01 00:36:45,108 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:45,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:45,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1718432684, now seen corresponding path program 1 times [2023-04-01 00:36:45,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:45,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143616350] [2023-04-01 00:36:45,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:45,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:45,489 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 00:36:45,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:45,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143616350] [2023-04-01 00:36:45,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143616350] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:45,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:45,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 00:36:45,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828755655] [2023-04-01 00:36:45,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:45,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 00:36:45,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:45,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 00:36:45,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-01 00:36:45,491 INFO L87 Difference]: Start difference. First operand 153 states and 173 transitions. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 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 00:36:46,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:46,222 INFO L93 Difference]: Finished difference Result 303 states and 365 transitions. [2023-04-01 00:36:46,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 00:36:46,222 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 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 88 [2023-04-01 00:36:46,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:46,223 INFO L225 Difference]: With dead ends: 303 [2023-04-01 00:36:46,223 INFO L226 Difference]: Without dead ends: 297 [2023-04-01 00:36:46,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-01 00:36:46,224 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 819 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:46,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1350 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:36:46,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-04-01 00:36:46,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 147. [2023-04-01 00:36:46,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 142 states have (on average 1.1549295774647887) internal successors, (164), 143 states have internal predecessors, (164), 2 states have call successors, (2), 2 states 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 00:36:46,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 167 transitions. [2023-04-01 00:36:46,304 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 167 transitions. Word has length 88 [2023-04-01 00:36:46,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:46,304 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 167 transitions. [2023-04-01 00:36:46,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 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 00:36:46,304 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 167 transitions. [2023-04-01 00:36:46,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-01 00:36:46,305 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:46,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:46,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-04-01 00:36:46,305 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:46,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:46,305 INFO L85 PathProgramCache]: Analyzing trace with hash 301982116, now seen corresponding path program 1 times [2023-04-01 00:36:46,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:46,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19646973] [2023-04-01 00:36:46,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:46,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:47,359 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 00:36:47,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:47,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19646973] [2023-04-01 00:36:47,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19646973] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:47,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:47,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-04-01 00:36:47,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224409313] [2023-04-01 00:36:47,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:47,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-04-01 00:36:47,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:47,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-04-01 00:36:47,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2023-04-01 00:36:47,361 INFO L87 Difference]: Start difference. First operand 147 states and 167 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 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 00:36:50,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:50,433 INFO L93 Difference]: Finished difference Result 532 states and 635 transitions. [2023-04-01 00:36:50,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-04-01 00:36:50,434 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 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 88 [2023-04-01 00:36:50,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:50,436 INFO L225 Difference]: With dead ends: 532 [2023-04-01 00:36:50,436 INFO L226 Difference]: Without dead ends: 524 [2023-04-01 00:36:50,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=369, Invalid=1887, Unknown=0, NotChecked=0, Total=2256 [2023-04-01 00:36:50,437 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 1211 mSDsluCounter, 5962 mSDsCounter, 0 mSdLazyCounter, 3115 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 6391 SdHoareTripleChecker+Invalid, 3155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:50,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 6391 Invalid, 3155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3115 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 00:36:50,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2023-04-01 00:36:50,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 166. [2023-04-01 00:36:50,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 161 states have (on average 1.1614906832298137) internal successors, (187), 162 states have internal predecessors, (187), 2 states have call successors, (2), 2 states 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 00:36:50,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 190 transitions. [2023-04-01 00:36:50,536 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 190 transitions. Word has length 88 [2023-04-01 00:36:50,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:50,536 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 190 transitions. [2023-04-01 00:36:50,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 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 00:36:50,536 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 190 transitions. [2023-04-01 00:36:50,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-01 00:36:50,537 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:50,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:50,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-04-01 00:36:50,537 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 00:36:50,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:50,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1950949953, now seen corresponding path program 1 times [2023-04-01 00:36:50,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:50,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983729025] [2023-04-01 00:36:50,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:50,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat