/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 02:40:25,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 02:40:25,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 02:40:25,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 02:40:25,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 02:40:25,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 02:40:25,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 02:40:25,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 02:40:25,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 02:40:25,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 02:40:25,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 02:40:25,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 02:40:25,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 02:40:25,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 02:40:25,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 02:40:25,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 02:40:25,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 02:40:25,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 02:40:25,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 02:40:25,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 02:40:25,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 02:40:25,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 02:40:25,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 02:40:25,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 02:40:25,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 02:40:25,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 02:40:25,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 02:40:25,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 02:40:25,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 02:40:25,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 02:40:25,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 02:40:25,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 02:40:25,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 02:40:25,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 02:40:25,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 02:40:25,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 02:40:25,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 02:40:25,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 02:40:25,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 02:40:25,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 02:40:25,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 02:40:25,923 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 02:40:25,957 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 02:40:25,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 02:40:25,958 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 02:40:25,958 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 02:40:25,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 02:40:25,959 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 02:40:25,959 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 02:40:25,959 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 02:40:25,959 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 02:40:25,959 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 02:40:25,960 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 02:40:25,960 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 02:40:25,960 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 02:40:25,960 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 02:40:25,960 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 02:40:25,960 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 02:40:25,961 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 02:40:25,961 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 02:40:25,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 02:40:25,962 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 02:40:25,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 02:40:25,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 02:40:25,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 02:40:25,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 02:40:25,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 02:40:25,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 02:40:25,963 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 02:40:25,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 02:40:25,963 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 02:40:25,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 02:40:25,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 02:40:25,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 02:40:25,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:40:25,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 02:40:25,964 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 02:40:25,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 02:40:25,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 02:40:25,964 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 02:40:25,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 02:40:25,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 02:40:25,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 02:40:25,965 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 02:40:26,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 02:40:26,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 02:40:26,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 02:40:26,240 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 02:40:26,240 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 02:40:26,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2023-04-03 02:40:27,335 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 02:40:27,819 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 02:40:27,820 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2023-04-03 02:40:27,852 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dc9cc8c9/bcedd7062c3a4d668e3847970b82c3e6/FLAGfcc24f792 [2023-04-03 02:40:27,925 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dc9cc8c9/bcedd7062c3a4d668e3847970b82c3e6 [2023-04-03 02:40:27,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 02:40:27,928 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 02:40:27,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 02:40:27,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 02:40:27,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 02:40:27,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:40:27" (1/1) ... [2023-04-03 02:40:27,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30adb6ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:40:27, skipping insertion in model container [2023-04-03 02:40:27,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:40:27" (1/1) ... [2023-04-03 02:40:27,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 02:40:28,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 02:40:28,584 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32048,32061] [2023-04-03 02:40:28,669 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[55802,55815] [2023-04-03 02:40:28,690 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[64372,64385] [2023-04-03 02:40:28,753 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[91775,91788] [2023-04-03 02:40:28,784 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[106857,106870] [2023-04-03 02:40:28,817 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[123963,123976] [2023-04-03 02:40:28,858 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[141761,141774] [2023-04-03 02:40:29,095 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:40:29,114 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 02:40:29,191 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32048,32061] [2023-04-03 02:40:29,225 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[55802,55815] [2023-04-03 02:40:29,238 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[64372,64385] [2023-04-03 02:40:29,277 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[91775,91788] [2023-04-03 02:40:29,299 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[106857,106870] [2023-04-03 02:40:29,323 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[123963,123976] [2023-04-03 02:40:29,349 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[141761,141774] [2023-04-03 02:40:29,458 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:40:29,483 INFO L208 MainTranslator]: Completed translation [2023-04-03 02:40:29,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:40:29 WrapperNode [2023-04-03 02:40:29,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 02:40:29,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 02:40:29,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 02:40:29,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 02:40:29,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:40:29" (1/1) ... [2023-04-03 02:40:29,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:40:29" (1/1) ... [2023-04-03 02:40:29,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:40:29" (1/1) ... [2023-04-03 02:40:29,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:40:29" (1/1) ... [2023-04-03 02:40:29,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:40:29" (1/1) ... [2023-04-03 02:40:29,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:40:29" (1/1) ... [2023-04-03 02:40:29,693 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:40:29" (1/1) ... [2023-04-03 02:40:29,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:40:29" (1/1) ... [2023-04-03 02:40:29,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 02:40:29,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 02:40:29,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 02:40:29,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 02:40:29,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:40:29" (1/1) ... [2023-04-03 02:40:29,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:40:29,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 02:40:29,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-03 02:40:29,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-03 02:40:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 02:40:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 02:40:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 02:40:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 02:40:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 02:40:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 02:40:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 02:40:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 02:40:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 02:40:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 02:40:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 02:40:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 02:40:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 02:40:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 02:40:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 02:40:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 02:40:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 02:40:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 02:40:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 02:40:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 02:40:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 02:40:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 02:40:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 02:40:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 02:40:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 02:40:29,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 02:40:29,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 02:40:29,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 02:40:30,174 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 02:40:30,177 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 02:40:33,522 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 02:40:33,808 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 02:40:33,809 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 02:40:33,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:40:33 BoogieIcfgContainer [2023-04-03 02:40:33,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 02:40:33,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 02:40:33,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 02:40:33,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 02:40:33,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 02:40:27" (1/3) ... [2023-04-03 02:40:33,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ccf585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:40:33, skipping insertion in model container [2023-04-03 02:40:33,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:40:29" (2/3) ... [2023-04-03 02:40:33,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ccf585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:40:33, skipping insertion in model container [2023-04-03 02:40:33,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:40:33" (3/3) ... [2023-04-03 02:40:33,821 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2023-04-03 02:40:33,836 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 02:40:33,836 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-04-03 02:40:33,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 02:40:33,907 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;@3339573b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 02:40:33,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-04-03 02:40:33,917 INFO L276 IsEmpty]: Start isEmpty. Operand has 1994 states, 1982 states have (on average 1.7764883955600403) internal successors, (3521), 1989 states have internal predecessors, (3521), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-03 02:40:33,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-03 02:40:33,941 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:33,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:40:33,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:40:33,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:33,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1622227775, now seen corresponding path program 1 times [2023-04-03 02:40:33,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:33,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186871291] [2023-04-03 02:40:33,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:33,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:40:34,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:40:34,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:40:34,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186871291] [2023-04-03 02:40:34,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186871291] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:40:34,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:40:34,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:40:34,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011204551] [2023-04-03 02:40:34,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:40:34,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:40:34,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:40:34,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:40:34,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:40:34,882 INFO L87 Difference]: Start difference. First operand has 1994 states, 1982 states have (on average 1.7764883955600403) internal successors, (3521), 1989 states have internal predecessors, (3521), 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 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:36,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:36,670 INFO L93 Difference]: Finished difference Result 3183 states and 5507 transitions. [2023-04-03 02:40:36,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:40:36,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-03 02:40:36,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:36,698 INFO L225 Difference]: With dead ends: 3183 [2023-04-03 02:40:36,698 INFO L226 Difference]: Without dead ends: 2046 [2023-04-03 02:40:36,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:40:36,712 INFO L413 NwaCegarLoop]: 1657 mSDtfsCounter, 9725 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9725 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:36,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9725 Valid, 2128 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 02:40:36,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2023-04-03 02:40:36,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 2031. [2023-04-03 02:40:36,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2031 states, 2021 states have (on average 1.2805541810984662) internal successors, (2588), 2027 states have internal predecessors, (2588), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 2591 transitions. [2023-04-03 02:40:36,870 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 2591 transitions. Word has length 68 [2023-04-03 02:40:36,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:40:36,871 INFO L495 AbstractCegarLoop]: Abstraction has 2031 states and 2591 transitions. [2023-04-03 02:40:36,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:36,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 2591 transitions. [2023-04-03 02:40:36,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 02:40:36,877 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:36,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:40:36,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 02:40:36,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:40:36,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:36,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1943396449, now seen corresponding path program 1 times [2023-04-03 02:40:36,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:36,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812116272] [2023-04-03 02:40:36,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:36,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:40:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:40:37,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:40:37,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812116272] [2023-04-03 02:40:37,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812116272] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:40:37,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:40:37,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:40:37,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749255465] [2023-04-03 02:40:37,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:40:37,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:40:37,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:40:37,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:40:37,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:40:37,128 INFO L87 Difference]: Start difference. First operand 2031 states and 2591 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:38,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:38,440 INFO L93 Difference]: Finished difference Result 3578 states and 4555 transitions. [2023-04-03 02:40:38,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:40:38,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-03 02:40:38,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:38,450 INFO L225 Difference]: With dead ends: 3578 [2023-04-03 02:40:38,451 INFO L226 Difference]: Without dead ends: 2368 [2023-04-03 02:40:38,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:40:38,454 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 6130 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6130 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:38,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6130 Valid, 1148 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 02:40:38,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2023-04-03 02:40:38,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 2358. [2023-04-03 02:40:38,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2358 states, 2348 states have (on average 1.276405451448041) internal successors, (2997), 2354 states have internal predecessors, (2997), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:38,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 3000 transitions. [2023-04-03 02:40:38,579 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 3000 transitions. Word has length 69 [2023-04-03 02:40:38,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:40:38,579 INFO L495 AbstractCegarLoop]: Abstraction has 2358 states and 3000 transitions. [2023-04-03 02:40:38,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:38,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 3000 transitions. [2023-04-03 02:40:38,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 02:40:38,584 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:38,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:40:38,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 02:40:38,585 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:40:38,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:38,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1720297263, now seen corresponding path program 1 times [2023-04-03 02:40:38,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:38,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387538809] [2023-04-03 02:40:38,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:38,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:40:38,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:40:38,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:40:38,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387538809] [2023-04-03 02:40:38,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387538809] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:40:38,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:40:38,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:40:38,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095930291] [2023-04-03 02:40:38,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:40:38,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:40:38,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:40:38,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:40:38,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:40:38,889 INFO L87 Difference]: Start difference. First operand 2358 states and 3000 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:40,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:40,127 INFO L93 Difference]: Finished difference Result 4842 states and 6153 transitions. [2023-04-03 02:40:40,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:40:40,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-03 02:40:40,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:40,141 INFO L225 Difference]: With dead ends: 4842 [2023-04-03 02:40:40,142 INFO L226 Difference]: Without dead ends: 3349 [2023-04-03 02:40:40,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:40:40,148 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 5867 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5867 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:40,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5867 Valid, 1154 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-03 02:40:40,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3349 states. [2023-04-03 02:40:40,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3349 to 3333. [2023-04-03 02:40:40,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3333 states, 3323 states have (on average 1.2539873608185375) internal successors, (4167), 3329 states have internal predecessors, (4167), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:40,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 4170 transitions. [2023-04-03 02:40:40,381 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 4170 transitions. Word has length 69 [2023-04-03 02:40:40,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:40:40,381 INFO L495 AbstractCegarLoop]: Abstraction has 3333 states and 4170 transitions. [2023-04-03 02:40:40,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:40,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 4170 transitions. [2023-04-03 02:40:40,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 02:40:40,386 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:40,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:40:40,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 02:40:40,387 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:40:40,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:40,387 INFO L85 PathProgramCache]: Analyzing trace with hash -206001825, now seen corresponding path program 1 times [2023-04-03 02:40:40,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:40,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581517537] [2023-04-03 02:40:40,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:40,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:40:40,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:40:40,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:40:40,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581517537] [2023-04-03 02:40:40,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581517537] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:40:40,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:40:40,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:40:40,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619803371] [2023-04-03 02:40:40,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:40:40,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:40:40,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:40:40,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:40:40,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:40:40,631 INFO L87 Difference]: Start difference. First operand 3333 states and 4170 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:41,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:41,961 INFO L93 Difference]: Finished difference Result 7432 states and 9421 transitions. [2023-04-03 02:40:41,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:40:41,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-04-03 02:40:41,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:41,979 INFO L225 Difference]: With dead ends: 7432 [2023-04-03 02:40:41,979 INFO L226 Difference]: Without dead ends: 4850 [2023-04-03 02:40:41,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:40:41,985 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 6140 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6140 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:41,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6140 Valid, 1222 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-03 02:40:41,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4850 states. [2023-04-03 02:40:42,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4850 to 4844. [2023-04-03 02:40:42,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4844 states, 4834 states have (on average 1.2527927182457592) internal successors, (6056), 4840 states have internal predecessors, (6056), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:42,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4844 states to 4844 states and 6059 transitions. [2023-04-03 02:40:42,269 INFO L78 Accepts]: Start accepts. Automaton has 4844 states and 6059 transitions. Word has length 70 [2023-04-03 02:40:42,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:40:42,269 INFO L495 AbstractCegarLoop]: Abstraction has 4844 states and 6059 transitions. [2023-04-03 02:40:42,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:42,269 INFO L276 IsEmpty]: Start isEmpty. Operand 4844 states and 6059 transitions. [2023-04-03 02:40:42,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 02:40:42,275 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:42,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:40:42,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 02:40:42,276 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:40:42,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:42,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1193360943, now seen corresponding path program 1 times [2023-04-03 02:40:42,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:42,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177707993] [2023-04-03 02:40:42,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:42,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:40:42,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:40:42,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:40:42,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177707993] [2023-04-03 02:40:42,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177707993] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:40:42,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:40:42,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-03 02:40:42,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486356516] [2023-04-03 02:40:42,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:40:42,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-03 02:40:42,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:40:42,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-03 02:40:42,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-03 02:40:42,858 INFO L87 Difference]: Start difference. First operand 4844 states and 6059 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:46,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:46,257 INFO L93 Difference]: Finished difference Result 8789 states and 11232 transitions. [2023-04-03 02:40:46,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-03 02:40:46,258 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-04-03 02:40:46,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:46,291 INFO L225 Difference]: With dead ends: 8789 [2023-04-03 02:40:46,291 INFO L226 Difference]: Without dead ends: 7752 [2023-04-03 02:40:46,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2023-04-03 02:40:46,299 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 4707 mSDsluCounter, 3874 mSDsCounter, 0 mSdLazyCounter, 4874 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4707 SdHoareTripleChecker+Valid, 4766 SdHoareTripleChecker+Invalid, 4892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 4874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:46,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4707 Valid, 4766 Invalid, 4892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 4874 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-03 02:40:46,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7752 states. [2023-04-03 02:40:46,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7752 to 4851. [2023-04-03 02:40:46,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4851 states, 4841 states have (on average 1.2524271844660195) internal successors, (6063), 4847 states have internal predecessors, (6063), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:46,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4851 states to 4851 states and 6066 transitions. [2023-04-03 02:40:46,734 INFO L78 Accepts]: Start accepts. Automaton has 4851 states and 6066 transitions. Word has length 70 [2023-04-03 02:40:46,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:40:46,735 INFO L495 AbstractCegarLoop]: Abstraction has 4851 states and 6066 transitions. [2023-04-03 02:40:46,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:46,735 INFO L276 IsEmpty]: Start isEmpty. Operand 4851 states and 6066 transitions. [2023-04-03 02:40:46,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 02:40:46,741 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:46,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:40:46,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 02:40:46,742 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:40:46,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:46,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2114660212, now seen corresponding path program 1 times [2023-04-03 02:40:46,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:46,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413047323] [2023-04-03 02:40:46,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:46,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:40:47,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:40:47,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:40:47,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413047323] [2023-04-03 02:40:47,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413047323] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:40:47,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:40:47,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:40:47,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022713831] [2023-04-03 02:40:47,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:40:47,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:40:47,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:40:47,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:40:47,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:40:47,260 INFO L87 Difference]: Start difference. First operand 4851 states and 6066 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:49,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:49,564 INFO L93 Difference]: Finished difference Result 5843 states and 7319 transitions. [2023-04-03 02:40:49,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 02:40:49,565 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (2), 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 71 [2023-04-03 02:40:49,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:49,585 INFO L225 Difference]: With dead ends: 5843 [2023-04-03 02:40:49,586 INFO L226 Difference]: Without dead ends: 5837 [2023-04-03 02:40:49,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2023-04-03 02:40:49,590 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 4076 mSDsluCounter, 2776 mSDsCounter, 0 mSdLazyCounter, 3399 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4076 SdHoareTripleChecker+Valid, 3650 SdHoareTripleChecker+Invalid, 3426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:49,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4076 Valid, 3650 Invalid, 3426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3399 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-03 02:40:49,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5837 states. [2023-04-03 02:40:50,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5837 to 4851. [2023-04-03 02:40:50,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4851 states, 4841 states have (on average 1.2522206155752944) internal successors, (6062), 4847 states have internal predecessors, (6062), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:50,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4851 states to 4851 states and 6065 transitions. [2023-04-03 02:40:50,031 INFO L78 Accepts]: Start accepts. Automaton has 4851 states and 6065 transitions. Word has length 71 [2023-04-03 02:40:50,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:40:50,033 INFO L495 AbstractCegarLoop]: Abstraction has 4851 states and 6065 transitions. [2023-04-03 02:40:50,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 4851 states and 6065 transitions. [2023-04-03 02:40:50,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 02:40:50,044 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:50,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:40:50,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 02:40:50,044 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:40:50,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:50,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1889505619, now seen corresponding path program 1 times [2023-04-03 02:40:50,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:50,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955768207] [2023-04-03 02:40:50,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:50,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:40:50,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:40:50,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:40:50,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955768207] [2023-04-03 02:40:50,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955768207] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:40:50,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:40:50,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 02:40:50,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125618707] [2023-04-03 02:40:50,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:40:50,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 02:40:50,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:40:50,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 02:40:50,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 02:40:50,976 INFO L87 Difference]: Start difference. First operand 4851 states and 6065 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:54,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:54,011 INFO L93 Difference]: Finished difference Result 9009 states and 11721 transitions. [2023-04-03 02:40:54,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 02:40:54,011 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-03 02:40:54,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:54,050 INFO L225 Difference]: With dead ends: 9009 [2023-04-03 02:40:54,051 INFO L226 Difference]: Without dead ends: 9005 [2023-04-03 02:40:54,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2023-04-03 02:40:54,055 INFO L413 NwaCegarLoop]: 1725 mSDtfsCounter, 9735 mSDsluCounter, 8970 mSDsCounter, 0 mSdLazyCounter, 1911 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9735 SdHoareTripleChecker+Valid, 10695 SdHoareTripleChecker+Invalid, 1934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:54,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9735 Valid, 10695 Invalid, 1934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1911 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 02:40:54,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9005 states. [2023-04-03 02:40:54,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9005 to 4847. [2023-04-03 02:40:54,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4847 states, 4838 states have (on average 1.2519636213311285) internal successors, (6057), 4843 states have internal predecessors, (6057), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:54,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4847 states to 4847 states and 6060 transitions. [2023-04-03 02:40:54,706 INFO L78 Accepts]: Start accepts. Automaton has 4847 states and 6060 transitions. Word has length 71 [2023-04-03 02:40:54,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:40:54,707 INFO L495 AbstractCegarLoop]: Abstraction has 4847 states and 6060 transitions. [2023-04-03 02:40:54,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:54,707 INFO L276 IsEmpty]: Start isEmpty. Operand 4847 states and 6060 transitions. [2023-04-03 02:40:54,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 02:40:54,715 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:54,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:40:54,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 02:40:54,716 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:40:54,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:54,717 INFO L85 PathProgramCache]: Analyzing trace with hash -443249022, now seen corresponding path program 1 times [2023-04-03 02:40:54,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:54,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096537685] [2023-04-03 02:40:54,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:54,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:40:55,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:40:55,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:40:55,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096537685] [2023-04-03 02:40:55,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096537685] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:40:55,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:40:55,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-03 02:40:55,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518036408] [2023-04-03 02:40:55,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:40:55,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-03 02:40:55,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:40:55,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-03 02:40:55,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-04-03 02:40:55,644 INFO L87 Difference]: Start difference. First operand 4847 states and 6060 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:58,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:58,991 INFO L93 Difference]: Finished difference Result 9887 states and 12916 transitions. [2023-04-03 02:40:58,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 02:40:58,992 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-03 02:40:58,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:59,010 INFO L225 Difference]: With dead ends: 9887 [2023-04-03 02:40:59,010 INFO L226 Difference]: Without dead ends: 8924 [2023-04-03 02:40:59,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2023-04-03 02:40:59,014 INFO L413 NwaCegarLoop]: 1834 mSDtfsCounter, 11452 mSDsluCounter, 8031 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11452 SdHoareTripleChecker+Valid, 9865 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:59,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11452 Valid, 9865 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 02:40:59,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8924 states. [2023-04-03 02:40:59,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8924 to 4798. [2023-04-03 02:40:59,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4798 states, 4790 states have (on average 1.253027139874739) internal successors, (6002), 4794 states have internal predecessors, (6002), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:59,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4798 states to 4798 states and 6005 transitions. [2023-04-03 02:40:59,821 INFO L78 Accepts]: Start accepts. Automaton has 4798 states and 6005 transitions. Word has length 72 [2023-04-03 02:40:59,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:40:59,821 INFO L495 AbstractCegarLoop]: Abstraction has 4798 states and 6005 transitions. [2023-04-03 02:40:59,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:59,822 INFO L276 IsEmpty]: Start isEmpty. Operand 4798 states and 6005 transitions. [2023-04-03 02:40:59,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 02:40:59,828 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:59,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:40:59,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 02:40:59,828 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:40:59,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:59,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1582756243, now seen corresponding path program 1 times [2023-04-03 02:40:59,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:59,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100860679] [2023-04-03 02:40:59,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:59,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:41:00,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:41:00,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:41:00,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100860679] [2023-04-03 02:41:00,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100860679] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:41:00,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:41:00,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-03 02:41:00,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299521405] [2023-04-03 02:41:00,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:41:00,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-03 02:41:00,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:41:00,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-03 02:41:00,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-03 02:41:00,279 INFO L87 Difference]: Start difference. First operand 4798 states and 6005 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:04,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:41:04,008 INFO L93 Difference]: Finished difference Result 9037 states and 11686 transitions. [2023-04-03 02:41:04,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-03 02:41:04,009 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 2 states have call successors, (2), 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 72 [2023-04-03 02:41:04,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:41:04,024 INFO L225 Difference]: With dead ends: 9037 [2023-04-03 02:41:04,024 INFO L226 Difference]: Without dead ends: 8098 [2023-04-03 02:41:04,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=471, Unknown=0, NotChecked=0, Total=650 [2023-04-03 02:41:04,029 INFO L413 NwaCegarLoop]: 1051 mSDtfsCounter, 8481 mSDsluCounter, 3718 mSDsCounter, 0 mSdLazyCounter, 4340 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8481 SdHoareTripleChecker+Valid, 4769 SdHoareTripleChecker+Invalid, 4383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 4340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-03 02:41:04,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8481 Valid, 4769 Invalid, 4383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 4340 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-03 02:41:04,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8098 states. [2023-04-03 02:41:04,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8098 to 4777. [2023-04-03 02:41:04,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4777 states, 4769 states have (on average 1.2530928915915287) internal successors, (5976), 4773 states have internal predecessors, (5976), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:04,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4777 states to 4777 states and 5979 transitions. [2023-04-03 02:41:04,826 INFO L78 Accepts]: Start accepts. Automaton has 4777 states and 5979 transitions. Word has length 72 [2023-04-03 02:41:04,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:41:04,826 INFO L495 AbstractCegarLoop]: Abstraction has 4777 states and 5979 transitions. [2023-04-03 02:41:04,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:04,826 INFO L276 IsEmpty]: Start isEmpty. Operand 4777 states and 5979 transitions. [2023-04-03 02:41:04,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-03 02:41:04,833 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:41:04,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:41:04,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 02:41:04,834 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:41:04,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:41:04,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1309388643, now seen corresponding path program 1 times [2023-04-03 02:41:04,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:41:04,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835566967] [2023-04-03 02:41:04,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:41:04,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:41:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:41:05,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:41:05,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:41:05,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835566967] [2023-04-03 02:41:05,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835566967] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:41:05,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:41:05,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 02:41:05,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817321927] [2023-04-03 02:41:05,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:41:05,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 02:41:05,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:41:05,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 02:41:05,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-04-03 02:41:05,638 INFO L87 Difference]: Start difference. First operand 4777 states and 5979 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:10,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:41:10,213 INFO L93 Difference]: Finished difference Result 11395 states and 14873 transitions. [2023-04-03 02:41:10,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 02:41:10,214 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 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 73 [2023-04-03 02:41:10,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:41:10,231 INFO L225 Difference]: With dead ends: 11395 [2023-04-03 02:41:10,232 INFO L226 Difference]: Without dead ends: 10453 [2023-04-03 02:41:10,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2023-04-03 02:41:10,235 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 8775 mSDsluCounter, 7035 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8775 SdHoareTripleChecker+Valid, 8688 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 02:41:10,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8775 Valid, 8688 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 02:41:10,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10453 states. [2023-04-03 02:41:11,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10453 to 4787. [2023-04-03 02:41:11,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4787 states, 4779 states have (on average 1.2531910441514962) internal successors, (5989), 4783 states have internal predecessors, (5989), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:11,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4787 states to 4787 states and 5992 transitions. [2023-04-03 02:41:11,249 INFO L78 Accepts]: Start accepts. Automaton has 4787 states and 5992 transitions. Word has length 73 [2023-04-03 02:41:11,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:41:11,249 INFO L495 AbstractCegarLoop]: Abstraction has 4787 states and 5992 transitions. [2023-04-03 02:41:11,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:11,250 INFO L276 IsEmpty]: Start isEmpty. Operand 4787 states and 5992 transitions. [2023-04-03 02:41:11,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-03 02:41:11,258 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:41:11,258 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] [2023-04-03 02:41:11,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 02:41:11,260 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:41:11,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:41:11,266 INFO L85 PathProgramCache]: Analyzing trace with hash -821423568, now seen corresponding path program 1 times [2023-04-03 02:41:11,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:41:11,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186552521] [2023-04-03 02:41:11,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:41:11,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:41:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:41:11,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:41:11,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:41:11,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186552521] [2023-04-03 02:41:11,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186552521] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:41:11,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:41:11,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:41:11,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817217935] [2023-04-03 02:41:11,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:41:11,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:41:11,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:41:11,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:41:11,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:41:11,730 INFO L87 Difference]: Start difference. First operand 4787 states and 5992 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 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) [2023-04-03 02:41:15,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:41:15,310 INFO L93 Difference]: Finished difference Result 6848 states and 8659 transitions. [2023-04-03 02:41:15,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 02:41:15,310 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 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 [2023-04-03 02:41:15,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:41:15,321 INFO L225 Difference]: With dead ends: 6848 [2023-04-03 02:41:15,321 INFO L226 Difference]: Without dead ends: 6839 [2023-04-03 02:41:15,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2023-04-03 02:41:15,323 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 8501 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 3692 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8501 SdHoareTripleChecker+Valid, 3703 SdHoareTripleChecker+Invalid, 3745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-03 02:41:15,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8501 Valid, 3703 Invalid, 3745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3692 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-03 02:41:15,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6839 states. [2023-04-03 02:41:16,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6839 to 4787. [2023-04-03 02:41:16,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4787 states, 4779 states have (on average 1.2529817953546767) internal successors, (5988), 4783 states have internal predecessors, (5988), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:16,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4787 states to 4787 states and 5991 transitions. [2023-04-03 02:41:16,535 INFO L78 Accepts]: Start accepts. Automaton has 4787 states and 5991 transitions. Word has length 74 [2023-04-03 02:41:16,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:41:16,535 INFO L495 AbstractCegarLoop]: Abstraction has 4787 states and 5991 transitions. [2023-04-03 02:41:16,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 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) [2023-04-03 02:41:16,535 INFO L276 IsEmpty]: Start isEmpty. Operand 4787 states and 5991 transitions. [2023-04-03 02:41:16,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-03 02:41:16,544 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:41:16,544 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] [2023-04-03 02:41:16,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-03 02:41:16,544 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:41:16,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:41:16,545 INFO L85 PathProgramCache]: Analyzing trace with hash 992893962, now seen corresponding path program 1 times [2023-04-03 02:41:16,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:41:16,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594787240] [2023-04-03 02:41:16,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:41:16,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:41:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:41:16,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:41:16,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:41:16,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594787240] [2023-04-03 02:41:16,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594787240] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:41:16,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:41:16,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:41:16,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435694506] [2023-04-03 02:41:16,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:41:16,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:41:16,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:41:16,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:41:16,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:41:16,652 INFO L87 Difference]: Start difference. First operand 4787 states and 5991 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:18,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:41:18,472 INFO L93 Difference]: Finished difference Result 9355 states and 11776 transitions. [2023-04-03 02:41:18,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:41:18,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 74 [2023-04-03 02:41:18,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:41:18,484 INFO L225 Difference]: With dead ends: 9355 [2023-04-03 02:41:18,484 INFO L226 Difference]: Without dead ends: 5741 [2023-04-03 02:41:18,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:41:18,492 INFO L413 NwaCegarLoop]: 1457 mSDtfsCounter, 1461 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 1937 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:41:18,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1461 Valid, 1937 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 02:41:18,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5741 states. [2023-04-03 02:41:20,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5741 to 5730. [2023-04-03 02:41:20,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5730 states, 5723 states have (on average 1.2468984798182772) internal successors, (7136), 5726 states have internal predecessors, (7136), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:20,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5730 states to 5730 states and 7139 transitions. [2023-04-03 02:41:20,142 INFO L78 Accepts]: Start accepts. Automaton has 5730 states and 7139 transitions. Word has length 74 [2023-04-03 02:41:20,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:41:20,143 INFO L495 AbstractCegarLoop]: Abstraction has 5730 states and 7139 transitions. [2023-04-03 02:41:20,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:20,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5730 states and 7139 transitions. [2023-04-03 02:41:20,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-03 02:41:20,150 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:41:20,151 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] [2023-04-03 02:41:20,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-03 02:41:20,151 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:41:20,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:41:20,151 INFO L85 PathProgramCache]: Analyzing trace with hash -515213678, now seen corresponding path program 1 times [2023-04-03 02:41:20,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:41:20,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499312373] [2023-04-03 02:41:20,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:41:20,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:41:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:41:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:41:20,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:41:20,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499312373] [2023-04-03 02:41:20,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499312373] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:41:20,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:41:20,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:41:20,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121689369] [2023-04-03 02:41:20,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:41:20,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:41:20,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:41:20,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:41:20,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:41:20,280 INFO L87 Difference]: Start difference. First operand 5730 states and 7139 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:22,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:41:22,044 INFO L93 Difference]: Finished difference Result 8684 states and 11024 transitions. [2023-04-03 02:41:22,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:41:22,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 74 [2023-04-03 02:41:22,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:41:22,054 INFO L225 Difference]: With dead ends: 8684 [2023-04-03 02:41:22,054 INFO L226 Difference]: Without dead ends: 5269 [2023-04-03 02:41:22,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:41:22,062 INFO L413 NwaCegarLoop]: 1154 mSDtfsCounter, 1105 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:41:22,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 1549 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:41:22,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5269 states. [2023-04-03 02:41:23,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5269 to 5265. [2023-04-03 02:41:23,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5265 states, 5259 states have (on average 1.263928503517779) internal successors, (6647), 5261 states have internal predecessors, (6647), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:23,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 6650 transitions. [2023-04-03 02:41:23,735 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 6650 transitions. Word has length 74 [2023-04-03 02:41:23,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:41:23,736 INFO L495 AbstractCegarLoop]: Abstraction has 5265 states and 6650 transitions. [2023-04-03 02:41:23,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:23,736 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 6650 transitions. [2023-04-03 02:41:23,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-03 02:41:23,742 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:41:23,742 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:41:23,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-03 02:41:23,742 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:41:23,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:41:23,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1727931748, now seen corresponding path program 1 times [2023-04-03 02:41:23,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:41:23,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425809498] [2023-04-03 02:41:23,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:41:23,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:41:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:41:24,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:41:24,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:41:24,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425809498] [2023-04-03 02:41:24,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425809498] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:41:24,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:41:24,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-03 02:41:24,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391612181] [2023-04-03 02:41:24,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:41:24,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-03 02:41:24,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:41:24,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-03 02:41:24,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-04-03 02:41:24,426 INFO L87 Difference]: Start difference. First operand 5265 states and 6650 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 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) [2023-04-03 02:41:32,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:41:32,290 INFO L93 Difference]: Finished difference Result 14475 states and 18874 transitions. [2023-04-03 02:41:32,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-03 02:41:32,291 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 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 [2023-04-03 02:41:32,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:41:32,308 INFO L225 Difference]: With dead ends: 14475 [2023-04-03 02:41:32,308 INFO L226 Difference]: Without dead ends: 12149 [2023-04-03 02:41:32,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=1007, Unknown=0, NotChecked=0, Total=1332 [2023-04-03 02:41:32,315 INFO L413 NwaCegarLoop]: 743 mSDtfsCounter, 7662 mSDsluCounter, 4620 mSDsCounter, 0 mSdLazyCounter, 4963 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7662 SdHoareTripleChecker+Valid, 5363 SdHoareTripleChecker+Invalid, 5031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 4963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:41:32,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7662 Valid, 5363 Invalid, 5031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 4963 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-03 02:41:32,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12149 states. [2023-04-03 02:41:34,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12149 to 5265. [2023-04-03 02:41:34,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5265 states, 5259 states have (on average 1.2635482030804335) internal successors, (6645), 5261 states have internal predecessors, (6645), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 6648 transitions. [2023-04-03 02:41:34,144 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 6648 transitions. Word has length 75 [2023-04-03 02:41:34,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:41:34,145 INFO L495 AbstractCegarLoop]: Abstraction has 5265 states and 6648 transitions. [2023-04-03 02:41:34,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 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) [2023-04-03 02:41:34,145 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 6648 transitions. [2023-04-03 02:41:34,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-03 02:41:34,150 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:41:34,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:41:34,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-03 02:41:34,151 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:41:34,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:41:34,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1953480569, now seen corresponding path program 1 times [2023-04-03 02:41:34,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:41:34,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154385341] [2023-04-03 02:41:34,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:41:34,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:41:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:41:34,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:41:34,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:41:34,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154385341] [2023-04-03 02:41:34,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154385341] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:41:34,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:41:34,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-03 02:41:34,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24636603] [2023-04-03 02:41:34,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:41:34,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-03 02:41:34,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:41:34,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-03 02:41:34,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-04-03 02:41:34,957 INFO L87 Difference]: Start difference. First operand 5265 states and 6648 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:41,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:41:41,038 INFO L93 Difference]: Finished difference Result 10624 states and 13875 transitions. [2023-04-03 02:41:41,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 02:41:41,039 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2023-04-03 02:41:41,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:41:41,050 INFO L225 Difference]: With dead ends: 10624 [2023-04-03 02:41:41,050 INFO L226 Difference]: Without dead ends: 10612 [2023-04-03 02:41:41,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-04-03 02:41:41,051 INFO L413 NwaCegarLoop]: 1444 mSDtfsCounter, 7893 mSDsluCounter, 5704 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7893 SdHoareTripleChecker+Valid, 7148 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 02:41:41,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7893 Valid, 7148 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 02:41:41,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10612 states. [2023-04-03 02:41:42,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10612 to 5253. [2023-04-03 02:41:42,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5253 states, 5248 states have (on average 1.2639100609756098) internal successors, (6633), 5249 states have internal predecessors, (6633), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:42,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5253 states to 5253 states and 6636 transitions. [2023-04-03 02:41:42,967 INFO L78 Accepts]: Start accepts. Automaton has 5253 states and 6636 transitions. Word has length 75 [2023-04-03 02:41:42,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:41:42,967 INFO L495 AbstractCegarLoop]: Abstraction has 5253 states and 6636 transitions. [2023-04-03 02:41:42,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:42,968 INFO L276 IsEmpty]: Start isEmpty. Operand 5253 states and 6636 transitions. [2023-04-03 02:41:42,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-03 02:41:42,974 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:41:42,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:41:42,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-03 02:41:42,974 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:41:42,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:41:42,975 INFO L85 PathProgramCache]: Analyzing trace with hash -802657206, now seen corresponding path program 1 times [2023-04-03 02:41:42,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:41:42,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405394406] [2023-04-03 02:41:42,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:41:42,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:41:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:41:43,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:41:43,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:41:43,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405394406] [2023-04-03 02:41:43,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405394406] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:41:43,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:41:43,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-03 02:41:43,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601437970] [2023-04-03 02:41:43,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:41:43,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-03 02:41:43,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:41:43,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-03 02:41:43,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-03 02:41:43,442 INFO L87 Difference]: Start difference. First operand 5253 states and 6636 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 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) [2023-04-03 02:41:50,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:41:50,927 INFO L93 Difference]: Finished difference Result 13220 states and 17311 transitions. [2023-04-03 02:41:50,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-03 02:41:50,928 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 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 [2023-04-03 02:41:50,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:41:50,939 INFO L225 Difference]: With dead ends: 13220 [2023-04-03 02:41:50,939 INFO L226 Difference]: Without dead ends: 11163 [2023-04-03 02:41:50,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2023-04-03 02:41:50,945 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 7313 mSDsluCounter, 2687 mSDsCounter, 0 mSdLazyCounter, 3076 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7313 SdHoareTripleChecker+Valid, 3449 SdHoareTripleChecker+Invalid, 3113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-03 02:41:50,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7313 Valid, 3449 Invalid, 3113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3076 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-03 02:41:50,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11163 states. [2023-04-03 02:41:53,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11163 to 5253. [2023-04-03 02:41:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5253 states, 5248 states have (on average 1.263719512195122) internal successors, (6632), 5249 states have internal predecessors, (6632), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:53,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5253 states to 5253 states and 6635 transitions. [2023-04-03 02:41:53,192 INFO L78 Accepts]: Start accepts. Automaton has 5253 states and 6635 transitions. Word has length 76 [2023-04-03 02:41:53,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:41:53,193 INFO L495 AbstractCegarLoop]: Abstraction has 5253 states and 6635 transitions. [2023-04-03 02:41:53,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 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) [2023-04-03 02:41:53,193 INFO L276 IsEmpty]: Start isEmpty. Operand 5253 states and 6635 transitions. [2023-04-03 02:41:53,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-03 02:41:53,198 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:41:53,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:41:53,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-03 02:41:53,199 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:41:53,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:41:53,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1284338234, now seen corresponding path program 1 times [2023-04-03 02:41:53,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:41:53,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136137245] [2023-04-03 02:41:53,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:41:53,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:41:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:41:53,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:41:53,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:41:53,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136137245] [2023-04-03 02:41:53,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136137245] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:41:53,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:41:53,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:41:53,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642801648] [2023-04-03 02:41:53,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:41:53,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:41:53,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:41:53,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:41:53,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:41:53,618 INFO L87 Difference]: Start difference. First operand 5253 states and 6635 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 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) [2023-04-03 02:42:00,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:42:00,181 INFO L93 Difference]: Finished difference Result 11174 states and 14512 transitions. [2023-04-03 02:42:00,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:42:00,181 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 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 [2023-04-03 02:42:00,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:42:00,192 INFO L225 Difference]: With dead ends: 11174 [2023-04-03 02:42:00,192 INFO L226 Difference]: Without dead ends: 9861 [2023-04-03 02:42:00,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 02:42:00,195 INFO L413 NwaCegarLoop]: 806 mSDtfsCounter, 6066 mSDsluCounter, 2430 mSDsCounter, 0 mSdLazyCounter, 3060 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6066 SdHoareTripleChecker+Valid, 3236 SdHoareTripleChecker+Invalid, 3109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 3060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 02:42:00,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6066 Valid, 3236 Invalid, 3109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 3060 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 02:42:00,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9861 states. [2023-04-03 02:42:02,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9861 to 5253. [2023-04-03 02:42:02,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5253 states, 5248 states have (on average 1.263528963414634) internal successors, (6631), 5249 states have internal predecessors, (6631), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:02,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5253 states to 5253 states and 6634 transitions. [2023-04-03 02:42:02,374 INFO L78 Accepts]: Start accepts. Automaton has 5253 states and 6634 transitions. Word has length 76 [2023-04-03 02:42:02,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:42:02,375 INFO L495 AbstractCegarLoop]: Abstraction has 5253 states and 6634 transitions. [2023-04-03 02:42:02,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 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) [2023-04-03 02:42:02,375 INFO L276 IsEmpty]: Start isEmpty. Operand 5253 states and 6634 transitions. [2023-04-03 02:42:02,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-03 02:42:02,379 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:42:02,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:42:02,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-03 02:42:02,380 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:42:02,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:42:02,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1075155678, now seen corresponding path program 1 times [2023-04-03 02:42:02,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:42:02,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470891886] [2023-04-03 02:42:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:42:02,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:42:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:42:02,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:42:02,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:42:02,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470891886] [2023-04-03 02:42:02,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470891886] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:42:02,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:42:02,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:42:02,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298104125] [2023-04-03 02:42:02,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:42:02,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:42:02,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:42:02,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:42:02,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:42:02,761 INFO L87 Difference]: Start difference. First operand 5253 states and 6634 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 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) [2023-04-03 02:42:06,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:42:06,815 INFO L93 Difference]: Finished difference Result 7083 states and 9115 transitions. [2023-04-03 02:42:06,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:42:06,815 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 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 [2023-04-03 02:42:06,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:42:06,824 INFO L225 Difference]: With dead ends: 7083 [2023-04-03 02:42:06,824 INFO L226 Difference]: Without dead ends: 6232 [2023-04-03 02:42:06,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 02:42:06,826 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 2993 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 2532 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2993 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 2558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:42:06,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2993 Valid, 2869 Invalid, 2558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2532 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-03 02:42:06,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6232 states. [2023-04-03 02:42:08,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6232 to 5252. [2023-04-03 02:42:08,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5252 states, 5247 states have (on average 1.2633886030112444) internal successors, (6629), 5248 states have internal predecessors, (6629), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:09,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 6632 transitions. [2023-04-03 02:42:09,000 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 6632 transitions. Word has length 76 [2023-04-03 02:42:09,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:42:09,000 INFO L495 AbstractCegarLoop]: Abstraction has 5252 states and 6632 transitions. [2023-04-03 02:42:09,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 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) [2023-04-03 02:42:09,001 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 6632 transitions. [2023-04-03 02:42:09,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-03 02:42:09,006 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:42:09,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:42:09,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-03 02:42:09,007 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:42:09,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:42:09,007 INFO L85 PathProgramCache]: Analyzing trace with hash -867948468, now seen corresponding path program 1 times [2023-04-03 02:42:09,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:42:09,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58093577] [2023-04-03 02:42:09,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:42:09,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:42:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:42:09,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:42:09,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:42:09,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58093577] [2023-04-03 02:42:09,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58093577] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:42:09,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:42:09,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:42:09,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608842624] [2023-04-03 02:42:09,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:42:09,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:42:09,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:42:09,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:42:09,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:42:09,105 INFO L87 Difference]: Start difference. First operand 5252 states and 6632 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:12,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:42:12,717 INFO L93 Difference]: Finished difference Result 10423 states and 13440 transitions. [2023-04-03 02:42:12,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:42:12,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2023-04-03 02:42:12,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:42:12,727 INFO L225 Difference]: With dead ends: 10423 [2023-04-03 02:42:12,727 INFO L226 Difference]: Without dead ends: 7660 [2023-04-03 02:42:12,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:42:12,730 INFO L413 NwaCegarLoop]: 1291 mSDtfsCounter, 701 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 2256 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:42:12,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 2256 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:42:12,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7660 states. [2023-04-03 02:42:16,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7660 to 7658. [2023-04-03 02:42:16,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7658 states, 7653 states have (on average 1.2678688096171435) internal successors, (9703), 7654 states have internal predecessors, (9703), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:16,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7658 states to 7658 states and 9706 transitions. [2023-04-03 02:42:16,263 INFO L78 Accepts]: Start accepts. Automaton has 7658 states and 9706 transitions. Word has length 76 [2023-04-03 02:42:16,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:42:16,264 INFO L495 AbstractCegarLoop]: Abstraction has 7658 states and 9706 transitions. [2023-04-03 02:42:16,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:16,264 INFO L276 IsEmpty]: Start isEmpty. Operand 7658 states and 9706 transitions. [2023-04-03 02:42:16,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-03 02:42:16,270 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:42:16,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:42:16,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-03 02:42:16,270 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:42:16,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:42:16,271 INFO L85 PathProgramCache]: Analyzing trace with hash 130601703, now seen corresponding path program 1 times [2023-04-03 02:42:16,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:42:16,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359106144] [2023-04-03 02:42:16,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:42:16,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:42:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:42:16,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:42:16,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:42:16,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359106144] [2023-04-03 02:42:16,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359106144] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:42:16,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:42:16,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-03 02:42:16,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357725022] [2023-04-03 02:42:16,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:42:16,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-03 02:42:16,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:42:16,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-03 02:42:16,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-03 02:42:16,736 INFO L87 Difference]: Start difference. First operand 7658 states and 9706 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 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) [2023-04-03 02:42:25,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:42:25,155 INFO L93 Difference]: Finished difference Result 15439 states and 20103 transitions. [2023-04-03 02:42:25,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 02:42:25,155 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 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 [2023-04-03 02:42:25,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:42:25,167 INFO L225 Difference]: With dead ends: 15439 [2023-04-03 02:42:25,167 INFO L226 Difference]: Without dead ends: 11372 [2023-04-03 02:42:25,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2023-04-03 02:42:25,172 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 6178 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 2976 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6178 SdHoareTripleChecker+Valid, 3151 SdHoareTripleChecker+Invalid, 2995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 02:42:25,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6178 Valid, 3151 Invalid, 2995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2976 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 02:42:25,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11372 states. [2023-04-03 02:42:29,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11372 to 7658. [2023-04-03 02:42:29,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7658 states, 7653 states have (on average 1.267607474193127) internal successors, (9701), 7654 states have internal predecessors, (9701), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7658 states to 7658 states and 9704 transitions. [2023-04-03 02:42:29,071 INFO L78 Accepts]: Start accepts. Automaton has 7658 states and 9704 transitions. Word has length 76 [2023-04-03 02:42:29,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:42:29,071 INFO L495 AbstractCegarLoop]: Abstraction has 7658 states and 9704 transitions. [2023-04-03 02:42:29,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 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) [2023-04-03 02:42:29,071 INFO L276 IsEmpty]: Start isEmpty. Operand 7658 states and 9704 transitions. [2023-04-03 02:42:29,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-03 02:42:29,077 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:42:29,077 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] [2023-04-03 02:42:29,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-03 02:42:29,078 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:42:29,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:42:29,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1716045107, now seen corresponding path program 1 times [2023-04-03 02:42:29,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:42:29,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669190882] [2023-04-03 02:42:29,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:42:29,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:42:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:42:29,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:42:29,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:42:29,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669190882] [2023-04-03 02:42:29,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669190882] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:42:29,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:42:29,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 02:42:29,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65571613] [2023-04-03 02:42:29,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:42:29,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 02:42:29,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:42:29,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 02:42:29,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 02:42:29,727 INFO L87 Difference]: Start difference. First operand 7658 states and 9704 transitions. Second operand has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:40,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:42:40,566 INFO L93 Difference]: Finished difference Result 15566 states and 20252 transitions. [2023-04-03 02:42:40,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 02:42:40,567 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 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 77 [2023-04-03 02:42:40,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:42:40,586 INFO L225 Difference]: With dead ends: 15566 [2023-04-03 02:42:40,586 INFO L226 Difference]: Without dead ends: 14794 [2023-04-03 02:42:40,589 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 [2023-04-03 02:42:40,590 INFO L413 NwaCegarLoop]: 1470 mSDtfsCounter, 7098 mSDsluCounter, 6239 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7098 SdHoareTripleChecker+Valid, 7709 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 02:42:40,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7098 Valid, 7709 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 02:42:40,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14794 states. [2023-04-03 02:42:44,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14794 to 7656. [2023-04-03 02:42:44,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7656 states, 7651 states have (on average 1.2675467259181807) internal successors, (9698), 7652 states have internal predecessors, (9698), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:44,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7656 states to 7656 states and 9701 transitions. [2023-04-03 02:42:44,898 INFO L78 Accepts]: Start accepts. Automaton has 7656 states and 9701 transitions. Word has length 77 [2023-04-03 02:42:44,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:42:44,898 INFO L495 AbstractCegarLoop]: Abstraction has 7656 states and 9701 transitions. [2023-04-03 02:42:44,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:44,898 INFO L276 IsEmpty]: Start isEmpty. Operand 7656 states and 9701 transitions. [2023-04-03 02:42:44,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-03 02:42:44,904 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:42:44,904 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] [2023-04-03 02:42:44,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-03 02:42:44,905 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:42:44,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:42:44,905 INFO L85 PathProgramCache]: Analyzing trace with hash -2147457425, now seen corresponding path program 1 times [2023-04-03 02:42:44,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:42:44,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447167598] [2023-04-03 02:42:44,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:42:44,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:42:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:42:44,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:42:44,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:42:44,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447167598] [2023-04-03 02:42:44,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447167598] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:42:44,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:42:44,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:42:44,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576248117] [2023-04-03 02:42:44,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:42:44,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:42:44,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:42:44,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:42:44,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:42:44,998 INFO L87 Difference]: Start difference. First operand 7656 states and 9701 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:50,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:42:50,188 INFO L93 Difference]: Finished difference Result 12410 states and 16156 transitions. [2023-04-03 02:42:50,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:42:50,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 77 [2023-04-03 02:42:50,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:42:50,198 INFO L225 Difference]: With dead ends: 12410 [2023-04-03 02:42:50,198 INFO L226 Difference]: Without dead ends: 8238 [2023-04-03 02:42:50,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:42:50,205 INFO L413 NwaCegarLoop]: 1167 mSDtfsCounter, 641 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:42:50,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 1701 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 02:42:50,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8238 states. [2023-04-03 02:42:54,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8238 to 6532. [2023-04-03 02:42:54,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6532 states, 6527 states have (on average 1.2737858127776926) internal successors, (8314), 6528 states have internal predecessors, (8314), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:54,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6532 states to 6532 states and 8317 transitions. [2023-04-03 02:42:54,341 INFO L78 Accepts]: Start accepts. Automaton has 6532 states and 8317 transitions. Word has length 77 [2023-04-03 02:42:54,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:42:54,341 INFO L495 AbstractCegarLoop]: Abstraction has 6532 states and 8317 transitions. [2023-04-03 02:42:54,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:54,342 INFO L276 IsEmpty]: Start isEmpty. Operand 6532 states and 8317 transitions. [2023-04-03 02:42:54,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-03 02:42:54,346 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:42:54,346 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] [2023-04-03 02:42:54,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-03 02:42:54,346 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:42:54,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:42:54,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1665831940, now seen corresponding path program 1 times [2023-04-03 02:42:54,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:42:54,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398701443] [2023-04-03 02:42:54,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:42:54,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:42:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:42:54,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:42:54,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:42:54,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398701443] [2023-04-03 02:42:54,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398701443] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:42:54,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:42:54,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:42:54,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15936813] [2023-04-03 02:42:54,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:42:54,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:42:54,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:42:54,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:42:54,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:42:54,440 INFO L87 Difference]: Start difference. First operand 6532 states and 8317 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:43:01,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:43:01,642 INFO L93 Difference]: Finished difference Result 13617 states and 17841 transitions. [2023-04-03 02:43:01,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:43:01,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 77 [2023-04-03 02:43:01,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:43:01,653 INFO L225 Difference]: With dead ends: 13617 [2023-04-03 02:43:01,653 INFO L226 Difference]: Without dead ends: 9297 [2023-04-03 02:43:01,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:43:01,659 INFO L413 NwaCegarLoop]: 1166 mSDtfsCounter, 672 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:43:01,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 1652 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:43:01,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9297 states. [2023-04-03 02:43:08,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9297 to 9295. [2023-04-03 02:43:08,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9295 states, 9290 states have (on average 1.2876210979547902) internal successors, (11962), 9291 states have internal predecessors, (11962), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:43:08,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9295 states to 9295 states and 11965 transitions. [2023-04-03 02:43:08,833 INFO L78 Accepts]: Start accepts. Automaton has 9295 states and 11965 transitions. Word has length 77 [2023-04-03 02:43:08,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:43:08,834 INFO L495 AbstractCegarLoop]: Abstraction has 9295 states and 11965 transitions. [2023-04-03 02:43:08,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:43:08,834 INFO L276 IsEmpty]: Start isEmpty. Operand 9295 states and 11965 transitions. [2023-04-03 02:43:08,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-03 02:43:08,837 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:43:08,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:43:08,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-03 02:43:08,837 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:43:08,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:43:08,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1875042970, now seen corresponding path program 1 times [2023-04-03 02:43:08,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:43:08,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064341128] [2023-04-03 02:43:08,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:43:08,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:43:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:43:09,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:43:09,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:43:09,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064341128] [2023-04-03 02:43:09,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064341128] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:43:09,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:43:09,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 02:43:09,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371244382] [2023-04-03 02:43:09,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:43:09,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 02:43:09,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:43:09,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 02:43:09,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-04-03 02:43:09,023 INFO L87 Difference]: Start difference. First operand 9295 states and 11965 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:43:20,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:43:20,529 INFO L93 Difference]: Finished difference Result 20131 states and 26350 transitions. [2023-04-03 02:43:20,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-03 02:43:20,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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 77 [2023-04-03 02:43:20,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:43:20,545 INFO L225 Difference]: With dead ends: 20131 [2023-04-03 02:43:20,545 INFO L226 Difference]: Without dead ends: 12908 [2023-04-03 02:43:20,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-04-03 02:43:20,553 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 2530 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2530 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:43:20,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2530 Valid, 1813 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:43:20,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12908 states. [2023-04-03 02:43:30,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12908 to 11417. [2023-04-03 02:43:30,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11417 states, 11412 states have (on average 1.288906414300736) internal successors, (14709), 11413 states have internal predecessors, (14709), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:43:30,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11417 states to 11417 states and 14712 transitions. [2023-04-03 02:43:30,768 INFO L78 Accepts]: Start accepts. Automaton has 11417 states and 14712 transitions. Word has length 77 [2023-04-03 02:43:30,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:43:30,768 INFO L495 AbstractCegarLoop]: Abstraction has 11417 states and 14712 transitions. [2023-04-03 02:43:30,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:43:30,768 INFO L276 IsEmpty]: Start isEmpty. Operand 11417 states and 14712 transitions. [2023-04-03 02:43:30,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-03 02:43:30,771 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:43:30,771 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] [2023-04-03 02:43:30,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-03 02:43:30,771 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:43:30,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:43:30,772 INFO L85 PathProgramCache]: Analyzing trace with hash -611323264, now seen corresponding path program 1 times [2023-04-03 02:43:30,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:43:30,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641150582] [2023-04-03 02:43:30,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:43:30,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:43:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:43:30,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:43:30,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:43:30,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641150582] [2023-04-03 02:43:30,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641150582] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:43:30,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:43:30,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:43:30,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515817454] [2023-04-03 02:43:30,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:43:30,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:43:30,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:43:30,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:43:30,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:43:30,858 INFO L87 Difference]: Start difference. First operand 11417 states and 14712 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:43:42,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:43:42,370 INFO L93 Difference]: Finished difference Result 22046 states and 28578 transitions. [2023-04-03 02:43:42,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:43:42,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 78 [2023-04-03 02:43:42,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:43:42,385 INFO L225 Difference]: With dead ends: 22046 [2023-04-03 02:43:42,385 INFO L226 Difference]: Without dead ends: 12020 [2023-04-03 02:43:42,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:43:42,397 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 983 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:43:42,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 1452 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:43:42,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12020 states. [2023-04-03 02:43:52,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12020 to 10486. [2023-04-03 02:43:52,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10486 states, 10481 states have (on average 1.2925293388035493) internal successors, (13547), 10482 states have internal predecessors, (13547), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:43:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10486 states to 10486 states and 13550 transitions. [2023-04-03 02:43:52,515 INFO L78 Accepts]: Start accepts. Automaton has 10486 states and 13550 transitions. Word has length 78 [2023-04-03 02:43:52,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:43:52,515 INFO L495 AbstractCegarLoop]: Abstraction has 10486 states and 13550 transitions. [2023-04-03 02:43:52,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:43:52,515 INFO L276 IsEmpty]: Start isEmpty. Operand 10486 states and 13550 transitions. [2023-04-03 02:43:52,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-03 02:43:52,518 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:43:52,518 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] [2023-04-03 02:43:52,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-03 02:43:52,518 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:43:52,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:43:52,518 INFO L85 PathProgramCache]: Analyzing trace with hash -408469055, now seen corresponding path program 1 times [2023-04-03 02:43:52,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:43:52,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213592698] [2023-04-03 02:43:52,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:43:52,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:43:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:43:52,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:43:52,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:43:52,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213592698] [2023-04-03 02:43:52,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213592698] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:43:52,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:43:52,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:43:52,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848696966] [2023-04-03 02:43:52,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:43:52,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:43:52,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:43:52,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:43:52,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:43:52,917 INFO L87 Difference]: Start difference. First operand 10486 states and 13550 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) [2023-04-03 02:44:07,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:44:07,586 INFO L93 Difference]: Finished difference Result 13634 states and 17416 transitions. [2023-04-03 02:44:07,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:44:07,587 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 [2023-04-03 02:44:07,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:44:07,602 INFO L225 Difference]: With dead ends: 13634 [2023-04-03 02:44:07,602 INFO L226 Difference]: Without dead ends: 12957 [2023-04-03 02:44:07,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 02:44:07,606 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 5300 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5300 SdHoareTripleChecker+Valid, 2458 SdHoareTripleChecker+Invalid, 2288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:44:07,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5300 Valid, 2458 Invalid, 2288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 02:44:07,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12957 states. [2023-04-03 02:44:17,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12957 to 10486. [2023-04-03 02:44:17,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10486 states, 10481 states have (on average 1.2924339280602997) internal successors, (13546), 10482 states have internal predecessors, (13546), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:44:17,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10486 states to 10486 states and 13549 transitions. [2023-04-03 02:44:17,655 INFO L78 Accepts]: Start accepts. Automaton has 10486 states and 13549 transitions. Word has length 79 [2023-04-03 02:44:17,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:44:17,655 INFO L495 AbstractCegarLoop]: Abstraction has 10486 states and 13549 transitions. [2023-04-03 02:44:17,655 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) [2023-04-03 02:44:17,655 INFO L276 IsEmpty]: Start isEmpty. Operand 10486 states and 13549 transitions. [2023-04-03 02:44:17,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-03 02:44:17,657 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:44:17,657 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] [2023-04-03 02:44:17,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-03 02:44:17,658 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:44:17,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:44:17,658 INFO L85 PathProgramCache]: Analyzing trace with hash 166596530, now seen corresponding path program 1 times [2023-04-03 02:44:17,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:44:17,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060959823] [2023-04-03 02:44:17,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:44:17,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:44:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:44:18,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:44:18,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:44:18,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060959823] [2023-04-03 02:44:18,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060959823] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:44:18,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:44:18,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:44:18,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219492179] [2023-04-03 02:44:18,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:44:18,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:44:18,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:44:18,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:44:18,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:44:18,047 INFO L87 Difference]: Start difference. First operand 10486 states and 13549 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)