./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/forester-heap/sll-01-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/sll-01-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ba1a5c8c8cff607fde50280cfe0e0975858a4c6ed38f8443d26bb1773b66a31d --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 21:40:33,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 21:40:33,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 21:40:33,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 21:40:33,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 21:40:33,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 21:40:33,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 21:40:33,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 21:40:33,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 21:40:33,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 21:40:33,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 21:40:33,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 21:40:33,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 21:40:33,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 21:40:33,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 21:40:33,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 21:40:33,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 21:40:33,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 21:40:33,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 21:40:33,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 21:40:33,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 21:40:33,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 21:40:33,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 21:40:33,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 21:40:33,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 21:40:33,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 21:40:33,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 21:40:33,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 21:40:33,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 21:40:33,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 21:40:33,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 21:40:33,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 21:40:33,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 21:40:33,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 21:40:33,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 21:40:33,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 21:40:33,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 21:40:33,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 21:40:33,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 21:40:33,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 21:40:33,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 21:40:33,825 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-18 21:40:33,853 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 21:40:33,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 21:40:33,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 21:40:33,854 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 21:40:33,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 21:40:33,855 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 21:40:33,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 21:40:33,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 21:40:33,856 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 21:40:33,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 21:40:33,856 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 21:40:33,856 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 21:40:33,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 21:40:33,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 21:40:33,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 21:40:33,857 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 21:40:33,857 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 21:40:33,857 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 21:40:33,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 21:40:33,858 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 21:40:33,858 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 21:40:33,858 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 21:40:33,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 21:40:33,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 21:40:33,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 21:40:33,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 21:40:33,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 21:40:33,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 21:40:33,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 21:40:33,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 21:40:33,859 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 21:40:33,859 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 21:40:33,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 21:40:33,860 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 21:40:33,860 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba1a5c8c8cff607fde50280cfe0e0975858a4c6ed38f8443d26bb1773b66a31d [2023-02-18 21:40:34,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 21:40:34,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 21:40:34,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 21:40:34,070 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 21:40:34,070 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 21:40:34,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-01-1.i [2023-02-18 21:40:34,983 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 21:40:35,138 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 21:40:35,138 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i [2023-02-18 21:40:35,147 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0863d8502/f6933107d20340d183a635489c1d387a/FLAG25bcfc83a [2023-02-18 21:40:35,172 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0863d8502/f6933107d20340d183a635489c1d387a [2023-02-18 21:40:35,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 21:40:35,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 21:40:35,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 21:40:35,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 21:40:35,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 21:40:35,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 09:40:35" (1/1) ... [2023-02-18 21:40:35,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65480c30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:40:35, skipping insertion in model container [2023-02-18 21:40:35,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 09:40:35" (1/1) ... [2023-02-18 21:40:35,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 21:40:35,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 21:40:35,399 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22034,22047] [2023-02-18 21:40:35,409 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22307,22320] [2023-02-18 21:40:35,410 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22516,22529] [2023-02-18 21:40:35,411 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22586,22599] [2023-02-18 21:40:35,413 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22853,22866] [2023-02-18 21:40:35,414 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22961,22974] [2023-02-18 21:40:35,414 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23192,23205] [2023-02-18 21:40:35,415 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23272,23285] [2023-02-18 21:40:35,415 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23351,23364] [2023-02-18 21:40:35,416 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23441,23454] [2023-02-18 21:40:35,417 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23619,23632] [2023-02-18 21:40:35,417 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23697,23710] [2023-02-18 21:40:35,418 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23774,23787] [2023-02-18 21:40:35,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 21:40:35,432 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 21:40:35,458 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22034,22047] [2023-02-18 21:40:35,460 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22307,22320] [2023-02-18 21:40:35,461 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22516,22529] [2023-02-18 21:40:35,461 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22586,22599] [2023-02-18 21:40:35,465 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22853,22866] [2023-02-18 21:40:35,467 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22961,22974] [2023-02-18 21:40:35,468 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23192,23205] [2023-02-18 21:40:35,474 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23272,23285] [2023-02-18 21:40:35,474 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23351,23364] [2023-02-18 21:40:35,475 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23441,23454] [2023-02-18 21:40:35,476 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23619,23632] [2023-02-18 21:40:35,476 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23697,23710] [2023-02-18 21:40:35,476 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23774,23787] [2023-02-18 21:40:35,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 21:40:35,497 INFO L208 MainTranslator]: Completed translation [2023-02-18 21:40:35,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:40:35 WrapperNode [2023-02-18 21:40:35,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 21:40:35,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 21:40:35,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 21:40:35,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 21:40:35,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:40:35" (1/1) ... [2023-02-18 21:40:35,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:40:35" (1/1) ... [2023-02-18 21:40:35,526 INFO L138 Inliner]: procedures = 119, calls = 41, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 227 [2023-02-18 21:40:35,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 21:40:35,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 21:40:35,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 21:40:35,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 21:40:35,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:40:35" (1/1) ... [2023-02-18 21:40:35,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:40:35" (1/1) ... [2023-02-18 21:40:35,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:40:35" (1/1) ... [2023-02-18 21:40:35,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:40:35" (1/1) ... [2023-02-18 21:40:35,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:40:35" (1/1) ... [2023-02-18 21:40:35,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:40:35" (1/1) ... [2023-02-18 21:40:35,558 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:40:35" (1/1) ... [2023-02-18 21:40:35,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:40:35" (1/1) ... [2023-02-18 21:40:35,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 21:40:35,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 21:40:35,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 21:40:35,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 21:40:35,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:40:35" (1/1) ... [2023-02-18 21:40:35,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 21:40:35,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 21:40:35,595 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) [2023-02-18 21:40:35,597 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 [2023-02-18 21:40:35,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 21:40:35,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 21:40:35,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-18 21:40:35,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-18 21:40:35,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 21:40:35,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 21:40:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 21:40:35,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 21:40:35,690 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 21:40:35,691 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 21:40:36,058 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 21:40:36,064 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 21:40:36,064 INFO L300 CfgBuilder]: Removed 30 assume(true) statements. [2023-02-18 21:40:36,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 09:40:36 BoogieIcfgContainer [2023-02-18 21:40:36,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 21:40:36,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 21:40:36,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 21:40:36,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 21:40:36,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 09:40:35" (1/3) ... [2023-02-18 21:40:36,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650532e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 09:40:36, skipping insertion in model container [2023-02-18 21:40:36,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:40:35" (2/3) ... [2023-02-18 21:40:36,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650532e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 09:40:36, skipping insertion in model container [2023-02-18 21:40:36,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 09:40:36" (3/3) ... [2023-02-18 21:40:36,071 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-01-1.i [2023-02-18 21:40:36,082 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 21:40:36,082 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 78 error locations. [2023-02-18 21:40:36,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 21:40:36,126 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@3661030, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 21:40:36,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2023-02-18 21:40:36,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 111 states have (on average 2.18018018018018) internal successors, (242), 189 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:36,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-18 21:40:36,135 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:36,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-18 21:40:36,136 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:36,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:36,139 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2023-02-18 21:40:36,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:36,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17566547] [2023-02-18 21:40:36,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:36,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:36,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:36,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17566547] [2023-02-18 21:40:36,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17566547] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:36,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:36,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 21:40:36,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378099567] [2023-02-18 21:40:36,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:36,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 21:40:36,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:36,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 21:40:36,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 21:40:36,302 INFO L87 Difference]: Start difference. First operand has 190 states, 111 states have (on average 2.18018018018018) internal successors, (242), 189 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:36,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:36,432 INFO L93 Difference]: Finished difference Result 192 states and 201 transitions. [2023-02-18 21:40:36,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 21:40:36,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-02-18 21:40:36,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:36,443 INFO L225 Difference]: With dead ends: 192 [2023-02-18 21:40:36,444 INFO L226 Difference]: Without dead ends: 188 [2023-02-18 21:40:36,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 21:40:36,449 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 182 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:36,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 119 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:40:36,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-02-18 21:40:36,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 183. [2023-02-18 21:40:36,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 113 states have (on average 1.7256637168141593) internal successors, (195), 182 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:36,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 195 transitions. [2023-02-18 21:40:36,479 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 195 transitions. Word has length 3 [2023-02-18 21:40:36,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:36,480 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 195 transitions. [2023-02-18 21:40:36,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:36,480 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 195 transitions. [2023-02-18 21:40:36,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-18 21:40:36,480 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:36,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-18 21:40:36,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 21:40:36,481 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:36,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:36,481 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-02-18 21:40:36,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:36,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439051645] [2023-02-18 21:40:36,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:36,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:36,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:36,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:36,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439051645] [2023-02-18 21:40:36,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439051645] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:36,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:36,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 21:40:36,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2504835] [2023-02-18 21:40:36,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:36,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 21:40:36,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:36,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 21:40:36,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 21:40:36,526 INFO L87 Difference]: Start difference. First operand 183 states and 195 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:36,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:36,639 INFO L93 Difference]: Finished difference Result 213 states and 224 transitions. [2023-02-18 21:40:36,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 21:40:36,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-02-18 21:40:36,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:36,648 INFO L225 Difference]: With dead ends: 213 [2023-02-18 21:40:36,649 INFO L226 Difference]: Without dead ends: 213 [2023-02-18 21:40:36,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 21:40:36,650 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 172 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:36,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 145 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:40:36,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-02-18 21:40:36,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 193. [2023-02-18 21:40:36,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 130 states have (on average 1.6615384615384616) internal successors, (216), 192 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:36,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 216 transitions. [2023-02-18 21:40:36,668 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 216 transitions. Word has length 3 [2023-02-18 21:40:36,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:36,668 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 216 transitions. [2023-02-18 21:40:36,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:36,670 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 216 transitions. [2023-02-18 21:40:36,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-18 21:40:36,671 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:36,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-18 21:40:36,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 21:40:36,671 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:36,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:36,672 INFO L85 PathProgramCache]: Analyzing trace with hash 28691969, now seen corresponding path program 1 times [2023-02-18 21:40:36,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:36,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369569554] [2023-02-18 21:40:36,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:36,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:36,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:36,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:36,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369569554] [2023-02-18 21:40:36,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369569554] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:36,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:36,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 21:40:36,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600045311] [2023-02-18 21:40:36,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:36,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 21:40:36,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:36,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 21:40:36,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 21:40:36,722 INFO L87 Difference]: Start difference. First operand 193 states and 216 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:36,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:36,748 INFO L93 Difference]: Finished difference Result 208 states and 219 transitions. [2023-02-18 21:40:36,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 21:40:36,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-02-18 21:40:36,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:36,750 INFO L225 Difference]: With dead ends: 208 [2023-02-18 21:40:36,750 INFO L226 Difference]: Without dead ends: 208 [2023-02-18 21:40:36,750 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 [2023-02-18 21:40:36,752 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 169 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:36,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 196 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 21:40:36,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-02-18 21:40:36,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 191. [2023-02-18 21:40:36,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 129 states have (on average 1.6511627906976745) internal successors, (213), 190 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:36,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 213 transitions. [2023-02-18 21:40:36,766 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 213 transitions. Word has length 5 [2023-02-18 21:40:36,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:36,767 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 213 transitions. [2023-02-18 21:40:36,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:36,767 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 213 transitions. [2023-02-18 21:40:36,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-18 21:40:36,767 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:36,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:40:36,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 21:40:36,768 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:36,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:36,769 INFO L85 PathProgramCache]: Analyzing trace with hash -618617197, now seen corresponding path program 1 times [2023-02-18 21:40:36,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:36,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65128228] [2023-02-18 21:40:36,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:36,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:36,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:36,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:36,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65128228] [2023-02-18 21:40:36,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65128228] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:36,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:36,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 21:40:36,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734551183] [2023-02-18 21:40:36,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:36,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 21:40:36,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:36,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 21:40:36,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:40:36,920 INFO L87 Difference]: Start difference. First operand 191 states and 213 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:37,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:37,035 INFO L93 Difference]: Finished difference Result 190 states and 212 transitions. [2023-02-18 21:40:37,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 21:40:37,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-18 21:40:37,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:37,036 INFO L225 Difference]: With dead ends: 190 [2023-02-18 21:40:37,037 INFO L226 Difference]: Without dead ends: 190 [2023-02-18 21:40:37,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 21:40:37,037 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 5 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:37,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 518 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:40:37,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-02-18 21:40:37,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2023-02-18 21:40:37,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 129 states have (on average 1.6434108527131783) internal successors, (212), 189 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:37,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 212 transitions. [2023-02-18 21:40:37,042 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 212 transitions. Word has length 11 [2023-02-18 21:40:37,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:37,043 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 212 transitions. [2023-02-18 21:40:37,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:37,043 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 212 transitions. [2023-02-18 21:40:37,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-18 21:40:37,043 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:37,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:40:37,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 21:40:37,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:37,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:37,044 INFO L85 PathProgramCache]: Analyzing trace with hash -618617196, now seen corresponding path program 1 times [2023-02-18 21:40:37,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:37,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801430001] [2023-02-18 21:40:37,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:37,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:37,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:37,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:37,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801430001] [2023-02-18 21:40:37,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801430001] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:37,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:37,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 21:40:37,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318723873] [2023-02-18 21:40:37,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:37,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 21:40:37,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:37,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 21:40:37,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:40:37,217 INFO L87 Difference]: Start difference. First operand 190 states and 212 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:37,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:37,324 INFO L93 Difference]: Finished difference Result 189 states and 211 transitions. [2023-02-18 21:40:37,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 21:40:37,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-18 21:40:37,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:37,325 INFO L225 Difference]: With dead ends: 189 [2023-02-18 21:40:37,325 INFO L226 Difference]: Without dead ends: 189 [2023-02-18 21:40:37,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 21:40:37,326 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 3 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:37,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 529 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:40:37,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-02-18 21:40:37,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2023-02-18 21:40:37,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 129 states have (on average 1.6356589147286822) internal successors, (211), 188 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:37,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 211 transitions. [2023-02-18 21:40:37,332 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 211 transitions. Word has length 11 [2023-02-18 21:40:37,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:37,332 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 211 transitions. [2023-02-18 21:40:37,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:37,332 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 211 transitions. [2023-02-18 21:40:37,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-18 21:40:37,333 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:37,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:40:37,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-18 21:40:37,333 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:37,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:37,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2054096635, now seen corresponding path program 1 times [2023-02-18 21:40:37,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:37,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484371337] [2023-02-18 21:40:37,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:37,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:37,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:37,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484371337] [2023-02-18 21:40:37,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484371337] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:37,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:37,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 21:40:37,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008254981] [2023-02-18 21:40:37,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:37,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 21:40:37,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:37,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 21:40:37,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 21:40:37,364 INFO L87 Difference]: Start difference. First operand 189 states and 211 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:37,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:37,370 INFO L93 Difference]: Finished difference Result 190 states and 212 transitions. [2023-02-18 21:40:37,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 21:40:37,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-18 21:40:37,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:37,372 INFO L225 Difference]: With dead ends: 190 [2023-02-18 21:40:37,372 INFO L226 Difference]: Without dead ends: 190 [2023-02-18 21:40:37,372 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 [2023-02-18 21:40:37,373 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:37,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 348 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 21:40:37,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-02-18 21:40:37,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2023-02-18 21:40:37,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 130 states have (on average 1.6307692307692307) internal successors, (212), 189 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:37,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 212 transitions. [2023-02-18 21:40:37,377 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 212 transitions. Word has length 13 [2023-02-18 21:40:37,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:37,378 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 212 transitions. [2023-02-18 21:40:37,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:37,379 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 212 transitions. [2023-02-18 21:40:37,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-18 21:40:37,380 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:37,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:40:37,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-18 21:40:37,381 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:37,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:37,381 INFO L85 PathProgramCache]: Analyzing trace with hash 479764253, now seen corresponding path program 1 times [2023-02-18 21:40:37,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:37,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033473666] [2023-02-18 21:40:37,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:37,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:37,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:37,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:37,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033473666] [2023-02-18 21:40:37,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033473666] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:37,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:37,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 21:40:37,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879542372] [2023-02-18 21:40:37,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:37,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 21:40:37,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:37,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 21:40:37,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-18 21:40:37,500 INFO L87 Difference]: Start difference. First operand 190 states and 212 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:37,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:37,656 INFO L93 Difference]: Finished difference Result 190 states and 211 transitions. [2023-02-18 21:40:37,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 21:40:37,656 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-18 21:40:37,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:37,657 INFO L225 Difference]: With dead ends: 190 [2023-02-18 21:40:37,657 INFO L226 Difference]: Without dead ends: 190 [2023-02-18 21:40:37,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-02-18 21:40:37,658 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 169 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:37,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 441 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:40:37,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-02-18 21:40:37,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2023-02-18 21:40:37,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 130 states have (on average 1.623076923076923) internal successors, (211), 188 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:37,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 211 transitions. [2023-02-18 21:40:37,661 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 211 transitions. Word has length 14 [2023-02-18 21:40:37,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:37,661 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 211 transitions. [2023-02-18 21:40:37,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:37,661 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 211 transitions. [2023-02-18 21:40:37,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-18 21:40:37,662 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:37,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:40:37,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-18 21:40:37,662 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:37,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:37,663 INFO L85 PathProgramCache]: Analyzing trace with hash 479764254, now seen corresponding path program 1 times [2023-02-18 21:40:37,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:37,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651515586] [2023-02-18 21:40:37,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:37,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:37,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:37,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651515586] [2023-02-18 21:40:37,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651515586] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:37,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:37,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 21:40:37,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69254066] [2023-02-18 21:40:37,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:37,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 21:40:37,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:37,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 21:40:37,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-18 21:40:37,835 INFO L87 Difference]: Start difference. First operand 189 states and 211 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:38,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:38,066 INFO L93 Difference]: Finished difference Result 189 states and 210 transitions. [2023-02-18 21:40:38,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 21:40:38,066 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-18 21:40:38,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:38,067 INFO L225 Difference]: With dead ends: 189 [2023-02-18 21:40:38,067 INFO L226 Difference]: Without dead ends: 189 [2023-02-18 21:40:38,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-02-18 21:40:38,068 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 164 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:38,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 479 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 21:40:38,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-02-18 21:40:38,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2023-02-18 21:40:38,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 130 states have (on average 1.6153846153846154) internal successors, (210), 187 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:38,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 210 transitions. [2023-02-18 21:40:38,071 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 210 transitions. Word has length 14 [2023-02-18 21:40:38,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:38,071 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 210 transitions. [2023-02-18 21:40:38,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:38,071 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 210 transitions. [2023-02-18 21:40:38,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-18 21:40:38,071 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:38,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:40:38,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-18 21:40:38,071 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:38,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:38,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1699725866, now seen corresponding path program 1 times [2023-02-18 21:40:38,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:38,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575091919] [2023-02-18 21:40:38,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:38,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:38,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:38,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:38,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575091919] [2023-02-18 21:40:38,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575091919] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:38,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:38,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 21:40:38,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837683501] [2023-02-18 21:40:38,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:38,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 21:40:38,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:38,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 21:40:38,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-18 21:40:38,117 INFO L87 Difference]: Start difference. First operand 188 states and 210 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:38,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:38,221 INFO L93 Difference]: Finished difference Result 275 states and 303 transitions. [2023-02-18 21:40:38,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 21:40:38,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-18 21:40:38,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:38,222 INFO L225 Difference]: With dead ends: 275 [2023-02-18 21:40:38,222 INFO L226 Difference]: Without dead ends: 275 [2023-02-18 21:40:38,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2023-02-18 21:40:38,224 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 191 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:38,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 699 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:40:38,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-02-18 21:40:38,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 185. [2023-02-18 21:40:38,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 128 states have (on average 1.6171875) internal successors, (207), 184 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:38,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 207 transitions. [2023-02-18 21:40:38,227 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 207 transitions. Word has length 15 [2023-02-18 21:40:38,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:38,227 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 207 transitions. [2023-02-18 21:40:38,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:38,227 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 207 transitions. [2023-02-18 21:40:38,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 21:40:38,228 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:38,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:40:38,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-18 21:40:38,228 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:38,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:38,228 INFO L85 PathProgramCache]: Analyzing trace with hash -99613104, now seen corresponding path program 1 times [2023-02-18 21:40:38,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:38,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087471125] [2023-02-18 21:40:38,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:38,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:38,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:38,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:38,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087471125] [2023-02-18 21:40:38,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087471125] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:38,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:38,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 21:40:38,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449383435] [2023-02-18 21:40:38,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:38,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 21:40:38,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:38,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 21:40:38,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:40:38,286 INFO L87 Difference]: Start difference. First operand 185 states and 207 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:38,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:38,359 INFO L93 Difference]: Finished difference Result 276 states and 303 transitions. [2023-02-18 21:40:38,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 21:40:38,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-18 21:40:38,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:38,361 INFO L225 Difference]: With dead ends: 276 [2023-02-18 21:40:38,361 INFO L226 Difference]: Without dead ends: 276 [2023-02-18 21:40:38,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-18 21:40:38,362 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 100 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:38,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 582 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:40:38,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-02-18 21:40:38,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 188. [2023-02-18 21:40:38,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 131 states have (on average 1.6030534351145038) internal successors, (210), 187 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:38,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 210 transitions. [2023-02-18 21:40:38,366 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 210 transitions. Word has length 17 [2023-02-18 21:40:38,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:38,366 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 210 transitions. [2023-02-18 21:40:38,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:38,366 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 210 transitions. [2023-02-18 21:40:38,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-18 21:40:38,366 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:38,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:40:38,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-18 21:40:38,367 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:38,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:38,367 INFO L85 PathProgramCache]: Analyzing trace with hash -582241035, now seen corresponding path program 1 times [2023-02-18 21:40:38,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:38,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702330652] [2023-02-18 21:40:38,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:38,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:38,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:38,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:38,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702330652] [2023-02-18 21:40:38,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702330652] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:38,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:38,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 21:40:38,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654949648] [2023-02-18 21:40:38,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:38,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 21:40:38,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:38,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 21:40:38,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 21:40:38,440 INFO L87 Difference]: Start difference. First operand 188 states and 210 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:38,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:38,569 INFO L93 Difference]: Finished difference Result 252 states and 267 transitions. [2023-02-18 21:40:38,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 21:40:38,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-02-18 21:40:38,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:38,571 INFO L225 Difference]: With dead ends: 252 [2023-02-18 21:40:38,571 INFO L226 Difference]: Without dead ends: 252 [2023-02-18 21:40:38,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:40:38,572 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 247 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:38,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 207 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:40:38,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-02-18 21:40:38,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 211. [2023-02-18 21:40:38,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 154 states have (on average 1.62987012987013) internal successors, (251), 210 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:38,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 251 transitions. [2023-02-18 21:40:38,576 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 251 transitions. Word has length 19 [2023-02-18 21:40:38,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:38,576 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 251 transitions. [2023-02-18 21:40:38,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:38,576 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 251 transitions. [2023-02-18 21:40:38,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-18 21:40:38,578 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:38,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:40:38,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-18 21:40:38,578 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:38,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:38,579 INFO L85 PathProgramCache]: Analyzing trace with hash -582241036, now seen corresponding path program 1 times [2023-02-18 21:40:38,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:38,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422451978] [2023-02-18 21:40:38,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:38,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:38,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:38,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422451978] [2023-02-18 21:40:38,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422451978] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:38,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:38,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 21:40:38,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25443609] [2023-02-18 21:40:38,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:38,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 21:40:38,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:38,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 21:40:38,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 21:40:38,646 INFO L87 Difference]: Start difference. First operand 211 states and 251 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:38,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:38,744 INFO L93 Difference]: Finished difference Result 204 states and 237 transitions. [2023-02-18 21:40:38,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 21:40:38,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-02-18 21:40:38,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:38,746 INFO L225 Difference]: With dead ends: 204 [2023-02-18 21:40:38,746 INFO L226 Difference]: Without dead ends: 204 [2023-02-18 21:40:38,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:40:38,747 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 244 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:38,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 114 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:40:38,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-02-18 21:40:38,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 200. [2023-02-18 21:40:38,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 154 states have (on average 1.5194805194805194) internal successors, (234), 199 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:38,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 234 transitions. [2023-02-18 21:40:38,751 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 234 transitions. Word has length 19 [2023-02-18 21:40:38,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:38,751 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 234 transitions. [2023-02-18 21:40:38,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:38,752 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 234 transitions. [2023-02-18 21:40:38,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-18 21:40:38,754 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:38,754 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] [2023-02-18 21:40:38,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-18 21:40:38,755 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:38,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:38,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1187837214, now seen corresponding path program 1 times [2023-02-18 21:40:38,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:38,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17368405] [2023-02-18 21:40:38,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:38,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:38,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:38,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:38,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17368405] [2023-02-18 21:40:38,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17368405] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:38,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:38,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 21:40:38,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818056482] [2023-02-18 21:40:38,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:38,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 21:40:38,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:38,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 21:40:38,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 21:40:38,781 INFO L87 Difference]: Start difference. First operand 200 states and 234 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:38,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:38,854 INFO L93 Difference]: Finished difference Result 230 states and 244 transitions. [2023-02-18 21:40:38,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 21:40:38,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-18 21:40:38,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:38,855 INFO L225 Difference]: With dead ends: 230 [2023-02-18 21:40:38,855 INFO L226 Difference]: Without dead ends: 230 [2023-02-18 21:40:38,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:40:38,856 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 218 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:38,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 264 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:40:38,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-02-18 21:40:38,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 198. [2023-02-18 21:40:38,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 153 states have (on average 1.5098039215686274) internal successors, (231), 197 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:38,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 231 transitions. [2023-02-18 21:40:38,862 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 231 transitions. Word has length 21 [2023-02-18 21:40:38,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:38,862 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 231 transitions. [2023-02-18 21:40:38,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:38,862 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 231 transitions. [2023-02-18 21:40:38,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-18 21:40:38,863 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:38,863 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] [2023-02-18 21:40:38,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-18 21:40:38,863 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:38,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:38,864 INFO L85 PathProgramCache]: Analyzing trace with hash 903845878, now seen corresponding path program 1 times [2023-02-18 21:40:38,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:38,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010184054] [2023-02-18 21:40:38,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:38,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:38,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:38,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:38,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010184054] [2023-02-18 21:40:38,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010184054] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:38,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:38,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 21:40:38,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912012516] [2023-02-18 21:40:38,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:38,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 21:40:38,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:38,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 21:40:38,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 21:40:38,935 INFO L87 Difference]: Start difference. First operand 198 states and 231 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:39,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:39,065 INFO L93 Difference]: Finished difference Result 198 states and 231 transitions. [2023-02-18 21:40:39,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 21:40:39,066 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-18 21:40:39,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:39,067 INFO L225 Difference]: With dead ends: 198 [2023-02-18 21:40:39,067 INFO L226 Difference]: Without dead ends: 198 [2023-02-18 21:40:39,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-18 21:40:39,067 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 98 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:39,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 427 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:40:39,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-02-18 21:40:39,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2023-02-18 21:40:39,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 153 states have (on average 1.5032679738562091) internal successors, (230), 196 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:39,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 230 transitions. [2023-02-18 21:40:39,071 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 230 transitions. Word has length 23 [2023-02-18 21:40:39,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:39,071 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 230 transitions. [2023-02-18 21:40:39,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:39,071 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 230 transitions. [2023-02-18 21:40:39,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-18 21:40:39,073 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:39,073 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] [2023-02-18 21:40:39,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-18 21:40:39,073 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:39,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:39,073 INFO L85 PathProgramCache]: Analyzing trace with hash 903845879, now seen corresponding path program 1 times [2023-02-18 21:40:39,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:39,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719948352] [2023-02-18 21:40:39,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:39,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:39,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:39,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:39,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719948352] [2023-02-18 21:40:39,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719948352] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:39,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:39,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 21:40:39,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866487521] [2023-02-18 21:40:39,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:39,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 21:40:39,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:39,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 21:40:39,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 21:40:39,174 INFO L87 Difference]: Start difference. First operand 197 states and 230 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:39,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:39,322 INFO L93 Difference]: Finished difference Result 190 states and 223 transitions. [2023-02-18 21:40:39,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 21:40:39,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-18 21:40:39,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:39,323 INFO L225 Difference]: With dead ends: 190 [2023-02-18 21:40:39,323 INFO L226 Difference]: Without dead ends: 190 [2023-02-18 21:40:39,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-02-18 21:40:39,323 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 41 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:39,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 488 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:40:39,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-02-18 21:40:39,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 183. [2023-02-18 21:40:39,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 148 states have (on average 1.4527027027027026) internal successors, (215), 182 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:39,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 215 transitions. [2023-02-18 21:40:39,326 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 215 transitions. Word has length 23 [2023-02-18 21:40:39,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:39,326 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 215 transitions. [2023-02-18 21:40:39,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:39,326 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 215 transitions. [2023-02-18 21:40:39,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 21:40:39,326 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:39,327 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] [2023-02-18 21:40:39,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-18 21:40:39,327 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:39,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:39,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1012497526, now seen corresponding path program 1 times [2023-02-18 21:40:39,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:39,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284757888] [2023-02-18 21:40:39,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:39,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:39,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:39,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284757888] [2023-02-18 21:40:39,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284757888] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:39,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:39,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 21:40:39,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165886809] [2023-02-18 21:40:39,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:39,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 21:40:39,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:39,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 21:40:39,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 21:40:39,385 INFO L87 Difference]: Start difference. First operand 183 states and 215 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:39,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:39,461 INFO L93 Difference]: Finished difference Result 186 states and 219 transitions. [2023-02-18 21:40:39,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 21:40:39,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-18 21:40:39,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:39,462 INFO L225 Difference]: With dead ends: 186 [2023-02-18 21:40:39,462 INFO L226 Difference]: Without dead ends: 186 [2023-02-18 21:40:39,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-02-18 21:40:39,463 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 38 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:39,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 592 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:40:39,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-02-18 21:40:39,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 179. [2023-02-18 21:40:39,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 146 states have (on average 1.4452054794520548) internal successors, (211), 178 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:39,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 211 transitions. [2023-02-18 21:40:39,466 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 211 transitions. Word has length 25 [2023-02-18 21:40:39,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:39,466 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 211 transitions. [2023-02-18 21:40:39,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:39,466 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 211 transitions. [2023-02-18 21:40:39,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-18 21:40:39,468 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:39,468 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] [2023-02-18 21:40:39,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-18 21:40:39,468 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:39,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:39,468 INFO L85 PathProgramCache]: Analyzing trace with hash 476921454, now seen corresponding path program 1 times [2023-02-18 21:40:39,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:39,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264713219] [2023-02-18 21:40:39,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:39,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:39,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:39,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:39,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264713219] [2023-02-18 21:40:39,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264713219] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:39,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:39,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 21:40:39,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318394891] [2023-02-18 21:40:39,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:39,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 21:40:39,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:39,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 21:40:39,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 21:40:39,494 INFO L87 Difference]: Start difference. First operand 179 states and 211 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:39,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:39,500 INFO L93 Difference]: Finished difference Result 252 states and 299 transitions. [2023-02-18 21:40:39,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 21:40:39,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-18 21:40:39,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:39,502 INFO L225 Difference]: With dead ends: 252 [2023-02-18 21:40:39,502 INFO L226 Difference]: Without dead ends: 252 [2023-02-18 21:40:39,502 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 [2023-02-18 21:40:39,502 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 50 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:39,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 283 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 21:40:39,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-02-18 21:40:39,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 185. [2023-02-18 21:40:39,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 152 states have (on average 1.4407894736842106) internal successors, (219), 184 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:39,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 219 transitions. [2023-02-18 21:40:39,506 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 219 transitions. Word has length 27 [2023-02-18 21:40:39,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:39,506 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 219 transitions. [2023-02-18 21:40:39,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:39,506 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 219 transitions. [2023-02-18 21:40:39,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 21:40:39,506 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:39,507 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] [2023-02-18 21:40:39,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-18 21:40:39,507 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:39,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:39,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1899651814, now seen corresponding path program 1 times [2023-02-18 21:40:39,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:39,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896947401] [2023-02-18 21:40:39,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:39,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:39,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:39,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:39,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896947401] [2023-02-18 21:40:39,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896947401] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:39,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:39,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 21:40:39,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729295572] [2023-02-18 21:40:39,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:39,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 21:40:39,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:39,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 21:40:39,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 21:40:39,539 INFO L87 Difference]: Start difference. First operand 185 states and 219 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:39,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:39,549 INFO L93 Difference]: Finished difference Result 183 states and 216 transitions. [2023-02-18 21:40:39,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 21:40:39,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-18 21:40:39,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:39,550 INFO L225 Difference]: With dead ends: 183 [2023-02-18 21:40:39,550 INFO L226 Difference]: Without dead ends: 183 [2023-02-18 21:40:39,551 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 [2023-02-18 21:40:39,551 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 20 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:39,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 254 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 21:40:39,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-02-18 21:40:39,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2023-02-18 21:40:39,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 151 states have (on average 1.4304635761589404) internal successors, (216), 182 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:39,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 216 transitions. [2023-02-18 21:40:39,555 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 216 transitions. Word has length 28 [2023-02-18 21:40:39,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:39,556 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 216 transitions. [2023-02-18 21:40:39,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:39,556 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 216 transitions. [2023-02-18 21:40:39,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-18 21:40:39,557 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:39,557 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] [2023-02-18 21:40:39,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-18 21:40:39,558 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:39,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:39,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1240331581, now seen corresponding path program 1 times [2023-02-18 21:40:39,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:39,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950429304] [2023-02-18 21:40:39,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:39,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:39,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:39,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:39,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950429304] [2023-02-18 21:40:39,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950429304] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:39,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:39,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-18 21:40:39,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500632811] [2023-02-18 21:40:39,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:39,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 21:40:39,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:39,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 21:40:39,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-18 21:40:39,677 INFO L87 Difference]: Start difference. First operand 183 states and 216 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:39,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:39,938 INFO L93 Difference]: Finished difference Result 308 states and 341 transitions. [2023-02-18 21:40:39,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-18 21:40:39,938 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-02-18 21:40:39,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:39,939 INFO L225 Difference]: With dead ends: 308 [2023-02-18 21:40:39,939 INFO L226 Difference]: Without dead ends: 308 [2023-02-18 21:40:39,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-02-18 21:40:39,940 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 453 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:39,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 781 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 21:40:39,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-02-18 21:40:39,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 216. [2023-02-18 21:40:39,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 184 states have (on average 1.3804347826086956) internal successors, (254), 215 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:39,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 254 transitions. [2023-02-18 21:40:39,943 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 254 transitions. Word has length 29 [2023-02-18 21:40:39,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:39,943 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 254 transitions. [2023-02-18 21:40:39,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:39,943 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 254 transitions. [2023-02-18 21:40:39,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-18 21:40:39,943 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:39,943 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:40:39,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-02-18 21:40:39,944 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:39,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:39,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1786976426, now seen corresponding path program 1 times [2023-02-18 21:40:39,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:39,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589445824] [2023-02-18 21:40:39,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:39,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:40,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:40,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:40,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589445824] [2023-02-18 21:40:40,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589445824] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 21:40:40,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471533859] [2023-02-18 21:40:40,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:40,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 21:40:40,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 21:40:40,045 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 21:40:40,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 21:40:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:40,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-18 21:40:40,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:40:40,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 21:40:40,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 21:40:40,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 21:40:40,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-18 21:40:40,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 21:40:40,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-18 21:40:40,296 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 21:40:40,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-18 21:40:40,303 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 21:40:40,303 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:40,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2023-02-18 21:40:40,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:40,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:40:40,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-18 21:40:40,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-02-18 21:40:40,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-18 21:40:40,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 21:40:40,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:40,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471533859] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 21:40:40,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 21:40:40,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2023-02-18 21:40:40,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492454576] [2023-02-18 21:40:40,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 21:40:40,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 21:40:40,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:40,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 21:40:40,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-02-18 21:40:40,523 INFO L87 Difference]: Start difference. First operand 216 states and 254 transitions. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:40,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:40,795 INFO L93 Difference]: Finished difference Result 310 states and 344 transitions. [2023-02-18 21:40:40,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 21:40:40,795 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-02-18 21:40:40,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:40,796 INFO L225 Difference]: With dead ends: 310 [2023-02-18 21:40:40,796 INFO L226 Difference]: Without dead ends: 310 [2023-02-18 21:40:40,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-02-18 21:40:40,797 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 290 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:40,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 816 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 21:40:40,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-02-18 21:40:40,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 251. [2023-02-18 21:40:40,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 219 states have (on average 1.3789954337899544) internal successors, (302), 250 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:40,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 302 transitions. [2023-02-18 21:40:40,800 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 302 transitions. Word has length 31 [2023-02-18 21:40:40,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:40,800 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 302 transitions. [2023-02-18 21:40:40,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:40,800 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 302 transitions. [2023-02-18 21:40:40,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-18 21:40:40,801 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:40,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:40:40,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 21:40:41,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 21:40:41,009 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:41,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:41,009 INFO L85 PathProgramCache]: Analyzing trace with hash 883081196, now seen corresponding path program 1 times [2023-02-18 21:40:41,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:41,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865206899] [2023-02-18 21:40:41,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:41,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:41,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:41,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:41,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865206899] [2023-02-18 21:40:41,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865206899] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:41,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:41,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 21:40:41,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857222257] [2023-02-18 21:40:41,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:41,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 21:40:41,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:41,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 21:40:41,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:40:41,082 INFO L87 Difference]: Start difference. First operand 251 states and 302 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:41,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:41,183 INFO L93 Difference]: Finished difference Result 250 states and 301 transitions. [2023-02-18 21:40:41,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 21:40:41,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-02-18 21:40:41,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:41,184 INFO L225 Difference]: With dead ends: 250 [2023-02-18 21:40:41,185 INFO L226 Difference]: Without dead ends: 250 [2023-02-18 21:40:41,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 21:40:41,185 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 5 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:41,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 408 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:40:41,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-02-18 21:40:41,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2023-02-18 21:40:41,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 219 states have (on average 1.3744292237442923) internal successors, (301), 249 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:41,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 301 transitions. [2023-02-18 21:40:41,189 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 301 transitions. Word has length 33 [2023-02-18 21:40:41,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:41,189 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 301 transitions. [2023-02-18 21:40:41,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:41,189 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 301 transitions. [2023-02-18 21:40:41,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-18 21:40:41,190 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:41,190 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] [2023-02-18 21:40:41,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-02-18 21:40:41,190 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:41,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:41,191 INFO L85 PathProgramCache]: Analyzing trace with hash 883081197, now seen corresponding path program 1 times [2023-02-18 21:40:41,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:41,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663322198] [2023-02-18 21:40:41,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:41,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:41,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:41,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:41,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663322198] [2023-02-18 21:40:41,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663322198] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:41,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:41,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 21:40:41,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535700513] [2023-02-18 21:40:41,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:41,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 21:40:41,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:41,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 21:40:41,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:40:41,301 INFO L87 Difference]: Start difference. First operand 250 states and 301 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:41,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:41,390 INFO L93 Difference]: Finished difference Result 249 states and 300 transitions. [2023-02-18 21:40:41,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 21:40:41,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-02-18 21:40:41,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:41,392 INFO L225 Difference]: With dead ends: 249 [2023-02-18 21:40:41,392 INFO L226 Difference]: Without dead ends: 249 [2023-02-18 21:40:41,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 21:40:41,393 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 3 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:41,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 411 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:40:41,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-02-18 21:40:41,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2023-02-18 21:40:41,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 219 states have (on average 1.36986301369863) internal successors, (300), 248 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:41,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 300 transitions. [2023-02-18 21:40:41,397 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 300 transitions. Word has length 33 [2023-02-18 21:40:41,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:41,397 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 300 transitions. [2023-02-18 21:40:41,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:41,397 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 300 transitions. [2023-02-18 21:40:41,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-18 21:40:41,398 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:41,398 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] [2023-02-18 21:40:41,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-02-18 21:40:41,398 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:41,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:41,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1776374941, now seen corresponding path program 1 times [2023-02-18 21:40:41,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:41,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558582246] [2023-02-18 21:40:41,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:41,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:41,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:41,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:41,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558582246] [2023-02-18 21:40:41,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558582246] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:41,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:41,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-18 21:40:41,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441675320] [2023-02-18 21:40:41,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:41,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 21:40:41,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:41,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 21:40:41,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-02-18 21:40:41,569 INFO L87 Difference]: Start difference. First operand 249 states and 300 transitions. Second operand has 11 states, 10 states have (on average 3.4) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:41,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:41,899 INFO L93 Difference]: Finished difference Result 357 states and 399 transitions. [2023-02-18 21:40:41,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 21:40:41,900 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.4) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-02-18 21:40:41,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:41,901 INFO L225 Difference]: With dead ends: 357 [2023-02-18 21:40:41,901 INFO L226 Difference]: Without dead ends: 357 [2023-02-18 21:40:41,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2023-02-18 21:40:41,902 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 382 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:41,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 896 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 21:40:41,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-02-18 21:40:41,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 250. [2023-02-18 21:40:41,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 222 states have (on average 1.3423423423423424) internal successors, (298), 249 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:41,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 298 transitions. [2023-02-18 21:40:41,905 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 298 transitions. Word has length 34 [2023-02-18 21:40:41,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:41,905 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 298 transitions. [2023-02-18 21:40:41,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.4) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:41,905 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 298 transitions. [2023-02-18 21:40:41,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-18 21:40:41,906 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:41,906 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] [2023-02-18 21:40:41,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-02-18 21:40:41,906 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:41,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:41,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1776374942, now seen corresponding path program 1 times [2023-02-18 21:40:41,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:41,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35670170] [2023-02-18 21:40:41,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:41,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:42,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:42,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:42,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35670170] [2023-02-18 21:40:42,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35670170] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:42,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:42,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-02-18 21:40:42,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086013156] [2023-02-18 21:40:42,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:42,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 21:40:42,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:42,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 21:40:42,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-02-18 21:40:42,183 INFO L87 Difference]: Start difference. First operand 250 states and 298 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:42,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:42,645 INFO L93 Difference]: Finished difference Result 426 states and 462 transitions. [2023-02-18 21:40:42,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-18 21:40:42,645 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-02-18 21:40:42,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:42,646 INFO L225 Difference]: With dead ends: 426 [2023-02-18 21:40:42,646 INFO L226 Difference]: Without dead ends: 426 [2023-02-18 21:40:42,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2023-02-18 21:40:42,647 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 451 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:42,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 1004 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 21:40:42,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-02-18 21:40:42,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 256. [2023-02-18 21:40:42,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 228 states have (on average 1.337719298245614) internal successors, (305), 255 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:42,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 305 transitions. [2023-02-18 21:40:42,651 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 305 transitions. Word has length 34 [2023-02-18 21:40:42,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:42,651 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 305 transitions. [2023-02-18 21:40:42,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:42,651 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 305 transitions. [2023-02-18 21:40:42,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-18 21:40:42,651 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:42,652 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] [2023-02-18 21:40:42,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-02-18 21:40:42,652 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:42,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:42,652 INFO L85 PathProgramCache]: Analyzing trace with hash -2030948706, now seen corresponding path program 1 times [2023-02-18 21:40:42,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:42,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698091000] [2023-02-18 21:40:42,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:42,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:42,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:42,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:42,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698091000] [2023-02-18 21:40:42,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698091000] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:42,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:42,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 21:40:42,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510302987] [2023-02-18 21:40:42,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:42,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 21:40:42,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:42,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 21:40:42,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 21:40:42,676 INFO L87 Difference]: Start difference. First operand 256 states and 305 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:42,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:42,681 INFO L93 Difference]: Finished difference Result 258 states and 307 transitions. [2023-02-18 21:40:42,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 21:40:42,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-02-18 21:40:42,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:42,683 INFO L225 Difference]: With dead ends: 258 [2023-02-18 21:40:42,683 INFO L226 Difference]: Without dead ends: 258 [2023-02-18 21:40:42,684 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 [2023-02-18 21:40:42,684 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:42,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 274 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 21:40:42,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-02-18 21:40:42,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2023-02-18 21:40:42,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 230 states have (on average 1.3347826086956522) internal successors, (307), 257 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:42,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 307 transitions. [2023-02-18 21:40:42,688 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 307 transitions. Word has length 35 [2023-02-18 21:40:42,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:42,688 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 307 transitions. [2023-02-18 21:40:42,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:42,688 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 307 transitions. [2023-02-18 21:40:42,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-18 21:40:42,689 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:42,689 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] [2023-02-18 21:40:42,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-02-18 21:40:42,689 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:42,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:42,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1994309533, now seen corresponding path program 1 times [2023-02-18 21:40:42,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:42,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742205067] [2023-02-18 21:40:42,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:42,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:43,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:43,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:43,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742205067] [2023-02-18 21:40:43,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742205067] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:43,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:43,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-02-18 21:40:43,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848194854] [2023-02-18 21:40:43,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:43,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-18 21:40:43,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:43,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-18 21:40:43,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-02-18 21:40:43,035 INFO L87 Difference]: Start difference. First operand 258 states and 307 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:43,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:43,510 INFO L93 Difference]: Finished difference Result 420 states and 456 transitions. [2023-02-18 21:40:43,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-18 21:40:43,510 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-02-18 21:40:43,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:43,511 INFO L225 Difference]: With dead ends: 420 [2023-02-18 21:40:43,511 INFO L226 Difference]: Without dead ends: 420 [2023-02-18 21:40:43,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2023-02-18 21:40:43,512 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 685 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:43,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 1097 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 21:40:43,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2023-02-18 21:40:43,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 258. [2023-02-18 21:40:43,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 230 states have (on average 1.3304347826086957) internal successors, (306), 257 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:43,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 306 transitions. [2023-02-18 21:40:43,516 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 306 transitions. Word has length 36 [2023-02-18 21:40:43,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:43,516 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 306 transitions. [2023-02-18 21:40:43,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:43,516 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 306 transitions. [2023-02-18 21:40:43,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-18 21:40:43,516 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:43,516 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] [2023-02-18 21:40:43,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-02-18 21:40:43,517 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:43,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:43,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1529477485, now seen corresponding path program 1 times [2023-02-18 21:40:43,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:43,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523782228] [2023-02-18 21:40:43,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:43,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:43,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 21:40:43,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:43,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523782228] [2023-02-18 21:40:43,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523782228] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:43,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:43,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 21:40:43,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237702284] [2023-02-18 21:40:43,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:43,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 21:40:43,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:43,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 21:40:43,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-02-18 21:40:43,569 INFO L87 Difference]: Start difference. First operand 258 states and 306 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:43,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:43,695 INFO L93 Difference]: Finished difference Result 273 states and 321 transitions. [2023-02-18 21:40:43,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 21:40:43,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-02-18 21:40:43,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:43,696 INFO L225 Difference]: With dead ends: 273 [2023-02-18 21:40:43,696 INFO L226 Difference]: Without dead ends: 273 [2023-02-18 21:40:43,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-02-18 21:40:43,697 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 29 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:43,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 608 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:40:43,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-02-18 21:40:43,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 267. [2023-02-18 21:40:43,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 239 states have (on average 1.3179916317991631) internal successors, (315), 266 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 315 transitions. [2023-02-18 21:40:43,701 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 315 transitions. Word has length 36 [2023-02-18 21:40:43,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:43,701 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 315 transitions. [2023-02-18 21:40:43,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:43,701 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 315 transitions. [2023-02-18 21:40:43,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-18 21:40:43,702 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:43,702 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] [2023-02-18 21:40:43,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-02-18 21:40:43,702 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:43,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:43,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1197350168, now seen corresponding path program 1 times [2023-02-18 21:40:43,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:43,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890435266] [2023-02-18 21:40:43,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:43,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:43,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:43,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890435266] [2023-02-18 21:40:43,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890435266] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:43,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:43,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-18 21:40:43,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128598925] [2023-02-18 21:40:43,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:43,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 21:40:43,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:43,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 21:40:43,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-02-18 21:40:43,863 INFO L87 Difference]: Start difference. First operand 267 states and 315 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:44,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:44,070 INFO L93 Difference]: Finished difference Result 267 states and 315 transitions. [2023-02-18 21:40:44,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 21:40:44,070 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-02-18 21:40:44,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:44,071 INFO L225 Difference]: With dead ends: 267 [2023-02-18 21:40:44,071 INFO L226 Difference]: Without dead ends: 267 [2023-02-18 21:40:44,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-02-18 21:40:44,071 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 79 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:44,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 647 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 21:40:44,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-02-18 21:40:44,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 266. [2023-02-18 21:40:44,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 239 states have (on average 1.3138075313807531) internal successors, (314), 265 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:44,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 314 transitions. [2023-02-18 21:40:44,075 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 314 transitions. Word has length 36 [2023-02-18 21:40:44,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:44,075 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 314 transitions. [2023-02-18 21:40:44,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:44,075 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 314 transitions. [2023-02-18 21:40:44,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-18 21:40:44,076 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:44,076 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] [2023-02-18 21:40:44,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-02-18 21:40:44,076 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:44,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:44,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1197350169, now seen corresponding path program 1 times [2023-02-18 21:40:44,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:44,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091958494] [2023-02-18 21:40:44,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:44,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:44,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:44,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:44,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091958494] [2023-02-18 21:40:44,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091958494] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:44,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:44,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-18 21:40:44,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435393770] [2023-02-18 21:40:44,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:44,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 21:40:44,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:44,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 21:40:44,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-02-18 21:40:44,291 INFO L87 Difference]: Start difference. First operand 266 states and 314 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:44,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:44,519 INFO L93 Difference]: Finished difference Result 266 states and 314 transitions. [2023-02-18 21:40:44,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 21:40:44,520 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-02-18 21:40:44,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:44,521 INFO L225 Difference]: With dead ends: 266 [2023-02-18 21:40:44,521 INFO L226 Difference]: Without dead ends: 266 [2023-02-18 21:40:44,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-02-18 21:40:44,521 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 74 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:44,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 714 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 21:40:44,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-02-18 21:40:44,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 265. [2023-02-18 21:40:44,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 239 states have (on average 1.3096234309623431) internal successors, (313), 264 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:44,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 313 transitions. [2023-02-18 21:40:44,525 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 313 transitions. Word has length 36 [2023-02-18 21:40:44,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:44,525 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 313 transitions. [2023-02-18 21:40:44,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:44,525 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 313 transitions. [2023-02-18 21:40:44,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-18 21:40:44,525 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:44,525 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] [2023-02-18 21:40:44,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-02-18 21:40:44,525 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:44,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:44,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1824914429, now seen corresponding path program 1 times [2023-02-18 21:40:44,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:44,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134829591] [2023-02-18 21:40:44,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:44,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:44,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:44,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:44,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134829591] [2023-02-18 21:40:44,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134829591] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:44,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:44,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 21:40:44,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449429273] [2023-02-18 21:40:44,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:44,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 21:40:44,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:44,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 21:40:44,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-18 21:40:44,585 INFO L87 Difference]: Start difference. First operand 265 states and 313 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:44,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:44,705 INFO L93 Difference]: Finished difference Result 275 states and 324 transitions. [2023-02-18 21:40:44,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 21:40:44,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-02-18 21:40:44,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:44,706 INFO L225 Difference]: With dead ends: 275 [2023-02-18 21:40:44,706 INFO L226 Difference]: Without dead ends: 275 [2023-02-18 21:40:44,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2023-02-18 21:40:44,707 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 21 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:44,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 639 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:40:44,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-02-18 21:40:44,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 261. [2023-02-18 21:40:44,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 236 states have (on average 1.305084745762712) internal successors, (308), 260 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:44,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 308 transitions. [2023-02-18 21:40:44,711 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 308 transitions. Word has length 37 [2023-02-18 21:40:44,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:44,711 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 308 transitions. [2023-02-18 21:40:44,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:44,711 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 308 transitions. [2023-02-18 21:40:44,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-18 21:40:44,712 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:44,712 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] [2023-02-18 21:40:44,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-02-18 21:40:44,712 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr75ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:44,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:44,713 INFO L85 PathProgramCache]: Analyzing trace with hash -886173384, now seen corresponding path program 1 times [2023-02-18 21:40:44,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:44,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762744226] [2023-02-18 21:40:44,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:44,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 21:40:44,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:44,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762744226] [2023-02-18 21:40:44,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762744226] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:44,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:44,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 21:40:44,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516523115] [2023-02-18 21:40:44,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:44,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 21:40:44,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:44,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 21:40:44,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 21:40:44,732 INFO L87 Difference]: Start difference. First operand 261 states and 308 transitions. Second operand has 3 states, 2 states have (on average 19.0) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:44,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:44,758 INFO L93 Difference]: Finished difference Result 274 states and 312 transitions. [2023-02-18 21:40:44,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 21:40:44,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 19.0) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-02-18 21:40:44,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:44,759 INFO L225 Difference]: With dead ends: 274 [2023-02-18 21:40:44,759 INFO L226 Difference]: Without dead ends: 274 [2023-02-18 21:40:44,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 21:40:44,760 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 91 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:44,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 144 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 21:40:44,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-02-18 21:40:44,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 262. [2023-02-18 21:40:44,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 237 states have (on average 1.3037974683544304) internal successors, (309), 261 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:44,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 309 transitions. [2023-02-18 21:40:44,767 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 309 transitions. Word has length 38 [2023-02-18 21:40:44,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:44,767 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 309 transitions. [2023-02-18 21:40:44,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 19.0) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:44,767 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 309 transitions. [2023-02-18 21:40:44,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-18 21:40:44,768 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:44,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:40:44,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-02-18 21:40:44,768 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:44,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:44,769 INFO L85 PathProgramCache]: Analyzing trace with hash 196879808, now seen corresponding path program 1 times [2023-02-18 21:40:44,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:44,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802058638] [2023-02-18 21:40:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:44,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:45,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:45,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:45,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802058638] [2023-02-18 21:40:45,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802058638] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:45,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:45,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-02-18 21:40:45,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508505953] [2023-02-18 21:40:45,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:45,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-18 21:40:45,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:45,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-18 21:40:45,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-02-18 21:40:45,108 INFO L87 Difference]: Start difference. First operand 262 states and 309 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:45,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:45,580 INFO L93 Difference]: Finished difference Result 422 states and 457 transitions. [2023-02-18 21:40:45,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-18 21:40:45,580 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-02-18 21:40:45,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:45,581 INFO L225 Difference]: With dead ends: 422 [2023-02-18 21:40:45,581 INFO L226 Difference]: Without dead ends: 422 [2023-02-18 21:40:45,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=170, Invalid=586, Unknown=0, NotChecked=0, Total=756 [2023-02-18 21:40:45,582 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 467 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:45,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 1233 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 21:40:45,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-02-18 21:40:45,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 262. [2023-02-18 21:40:45,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 237 states have (on average 1.2995780590717299) internal successors, (308), 261 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:45,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 308 transitions. [2023-02-18 21:40:45,587 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 308 transitions. Word has length 39 [2023-02-18 21:40:45,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:45,587 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 308 transitions. [2023-02-18 21:40:45,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:45,587 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 308 transitions. [2023-02-18 21:40:45,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-18 21:40:45,588 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:45,588 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] [2023-02-18 21:40:45,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-02-18 21:40:45,588 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:45,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:45,588 INFO L85 PathProgramCache]: Analyzing trace with hash -2051878023, now seen corresponding path program 1 times [2023-02-18 21:40:45,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:45,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334501562] [2023-02-18 21:40:45,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:45,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 21:40:45,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:45,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334501562] [2023-02-18 21:40:45,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334501562] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:45,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:45,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 21:40:45,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863840996] [2023-02-18 21:40:45,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:45,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 21:40:45,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:45,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 21:40:45,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 21:40:45,620 INFO L87 Difference]: Start difference. First operand 262 states and 308 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:45,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:45,654 INFO L93 Difference]: Finished difference Result 264 states and 309 transitions. [2023-02-18 21:40:45,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 21:40:45,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-02-18 21:40:45,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:45,655 INFO L225 Difference]: With dead ends: 264 [2023-02-18 21:40:45,655 INFO L226 Difference]: Without dead ends: 264 [2023-02-18 21:40:45,655 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 [2023-02-18 21:40:45,656 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 82 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:45,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 159 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 21:40:45,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-02-18 21:40:45,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 260. [2023-02-18 21:40:45,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 236 states have (on average 1.2923728813559323) internal successors, (305), 259 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:45,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 305 transitions. [2023-02-18 21:40:45,659 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 305 transitions. Word has length 41 [2023-02-18 21:40:45,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:45,659 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 305 transitions. [2023-02-18 21:40:45,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:45,660 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 305 transitions. [2023-02-18 21:40:45,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-18 21:40:45,660 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:45,660 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:40:45,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-02-18 21:40:45,660 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:45,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:45,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1173136884, now seen corresponding path program 1 times [2023-02-18 21:40:45,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:45,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350790670] [2023-02-18 21:40:45,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:45,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:45,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:45,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:45,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350790670] [2023-02-18 21:40:45,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350790670] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 21:40:45,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204117050] [2023-02-18 21:40:45,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:45,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 21:40:45,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 21:40:45,750 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 21:40:45,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 21:40:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:45,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-18 21:40:45,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:40:45,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 21:40:45,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 21:40:45,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-18 21:40:45,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-18 21:40:45,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-18 21:40:45,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-18 21:40:45,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 21:40:45,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:40:45,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 21:40:45,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204117050] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 21:40:45,889 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 21:40:45,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 9 [2023-02-18 21:40:45,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862944452] [2023-02-18 21:40:45,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 21:40:45,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 21:40:45,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:45,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 21:40:45,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-02-18 21:40:45,890 INFO L87 Difference]: Start difference. First operand 260 states and 305 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:46,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:46,123 INFO L93 Difference]: Finished difference Result 352 states and 387 transitions. [2023-02-18 21:40:46,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-18 21:40:46,123 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-02-18 21:40:46,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:46,124 INFO L225 Difference]: With dead ends: 352 [2023-02-18 21:40:46,124 INFO L226 Difference]: Without dead ends: 352 [2023-02-18 21:40:46,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-02-18 21:40:46,125 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 178 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:46,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 802 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 21:40:46,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-02-18 21:40:46,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 284. [2023-02-18 21:40:46,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 260 states have (on average 1.3038461538461539) internal successors, (339), 283 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:46,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 339 transitions. [2023-02-18 21:40:46,128 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 339 transitions. Word has length 41 [2023-02-18 21:40:46,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:46,129 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 339 transitions. [2023-02-18 21:40:46,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:46,129 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 339 transitions. [2023-02-18 21:40:46,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-18 21:40:46,129 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:46,129 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] [2023-02-18 21:40:46,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 21:40:46,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-02-18 21:40:46,337 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:46,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:46,337 INFO L85 PathProgramCache]: Analyzing trace with hash 816295160, now seen corresponding path program 1 times [2023-02-18 21:40:46,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:46,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629490953] [2023-02-18 21:40:46,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:46,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:46,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 21:40:46,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:46,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629490953] [2023-02-18 21:40:46,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629490953] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:46,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:46,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-18 21:40:46,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437951883] [2023-02-18 21:40:46,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:46,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 21:40:46,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:46,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 21:40:46,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-02-18 21:40:46,454 INFO L87 Difference]: Start difference. First operand 284 states and 339 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:46,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:46,687 INFO L93 Difference]: Finished difference Result 348 states and 397 transitions. [2023-02-18 21:40:46,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 21:40:46,688 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-02-18 21:40:46,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:46,688 INFO L225 Difference]: With dead ends: 348 [2023-02-18 21:40:46,688 INFO L226 Difference]: Without dead ends: 348 [2023-02-18 21:40:46,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-02-18 21:40:46,689 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 354 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:46,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 531 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 21:40:46,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-02-18 21:40:46,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 291. [2023-02-18 21:40:46,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 267 states have (on average 1.303370786516854) internal successors, (348), 290 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:46,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 348 transitions. [2023-02-18 21:40:46,693 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 348 transitions. Word has length 42 [2023-02-18 21:40:46,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:46,693 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 348 transitions. [2023-02-18 21:40:46,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:46,693 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 348 transitions. [2023-02-18 21:40:46,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-18 21:40:46,693 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:46,693 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] [2023-02-18 21:40:46,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-02-18 21:40:46,693 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr64REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:46,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:46,694 INFO L85 PathProgramCache]: Analyzing trace with hash 816295161, now seen corresponding path program 1 times [2023-02-18 21:40:46,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:46,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291261622] [2023-02-18 21:40:46,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:46,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:46,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 21:40:46,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:46,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291261622] [2023-02-18 21:40:46,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291261622] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:46,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:46,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-18 21:40:46,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074927985] [2023-02-18 21:40:46,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:46,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 21:40:46,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:46,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 21:40:46,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-02-18 21:40:46,868 INFO L87 Difference]: Start difference. First operand 291 states and 348 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:47,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:47,122 INFO L93 Difference]: Finished difference Result 348 states and 397 transitions. [2023-02-18 21:40:47,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 21:40:47,122 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-02-18 21:40:47,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:47,123 INFO L225 Difference]: With dead ends: 348 [2023-02-18 21:40:47,123 INFO L226 Difference]: Without dead ends: 348 [2023-02-18 21:40:47,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-02-18 21:40:47,124 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 302 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:47,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 560 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 21:40:47,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-02-18 21:40:47,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 297. [2023-02-18 21:40:47,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 273 states have (on average 1.3003663003663004) internal successors, (355), 296 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:47,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 355 transitions. [2023-02-18 21:40:47,128 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 355 transitions. Word has length 42 [2023-02-18 21:40:47,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:47,128 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 355 transitions. [2023-02-18 21:40:47,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:47,128 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 355 transitions. [2023-02-18 21:40:47,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-18 21:40:47,128 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:47,128 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] [2023-02-18 21:40:47,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-02-18 21:40:47,129 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr77ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:47,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:47,129 INFO L85 PathProgramCache]: Analyzing trace with hash 2007506213, now seen corresponding path program 1 times [2023-02-18 21:40:47,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:47,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440426373] [2023-02-18 21:40:47,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:47,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:47,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 21:40:47,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:47,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440426373] [2023-02-18 21:40:47,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440426373] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 21:40:47,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578651058] [2023-02-18 21:40:47,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:47,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 21:40:47,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 21:40:47,177 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 21:40:47,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 21:40:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:47,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 21:40:47,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:40:47,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 14 [2023-02-18 21:40:47,276 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~list~0#1.base_43| Int)) (let ((.cse0 (select |c_#valid| |v_ULTIMATE.start_main_~list~0#1.base_43|))) (and (= .cse0 0) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~list~0#1.base_43| .cse0) |c_#valid|) (= 0 (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~list~0#1.base_43|))))) is different from true [2023-02-18 21:40:47,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-02-18 21:40:47,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:40:47,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 21:40:47,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578651058] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 21:40:47,293 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 21:40:47,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-02-18 21:40:47,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460210886] [2023-02-18 21:40:47,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 21:40:47,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 21:40:47,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:47,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 21:40:47,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-02-18 21:40:47,296 INFO L87 Difference]: Start difference. First operand 297 states and 355 transitions. Second operand has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:47,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:47,385 INFO L93 Difference]: Finished difference Result 328 states and 386 transitions. [2023-02-18 21:40:47,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 21:40:47,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-02-18 21:40:47,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:47,387 INFO L225 Difference]: With dead ends: 328 [2023-02-18 21:40:47,387 INFO L226 Difference]: Without dead ends: 304 [2023-02-18 21:40:47,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2023-02-18 21:40:47,388 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 166 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:47,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 288 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 166 Unchecked, 0.1s Time] [2023-02-18 21:40:47,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-02-18 21:40:47,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2023-02-18 21:40:47,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 280 states have (on average 1.292857142857143) internal successors, (362), 303 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:47,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 362 transitions. [2023-02-18 21:40:47,391 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 362 transitions. Word has length 42 [2023-02-18 21:40:47,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:47,392 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 362 transitions. [2023-02-18 21:40:47,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:47,392 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 362 transitions. [2023-02-18 21:40:47,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-18 21:40:47,392 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:47,392 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] [2023-02-18 21:40:47,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-18 21:40:47,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 21:40:47,598 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:47,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:47,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1167718218, now seen corresponding path program 1 times [2023-02-18 21:40:47,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:47,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773115374] [2023-02-18 21:40:47,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:47,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:47,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:47,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:47,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773115374] [2023-02-18 21:40:47,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773115374] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:47,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:47,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 21:40:47,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834765114] [2023-02-18 21:40:47,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:47,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 21:40:47,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:47,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 21:40:47,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 21:40:47,622 INFO L87 Difference]: Start difference. First operand 304 states and 362 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:47,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:47,628 INFO L93 Difference]: Finished difference Result 458 states and 556 transitions. [2023-02-18 21:40:47,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 21:40:47,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-02-18 21:40:47,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:47,630 INFO L225 Difference]: With dead ends: 458 [2023-02-18 21:40:47,630 INFO L226 Difference]: Without dead ends: 458 [2023-02-18 21:40:47,630 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 [2023-02-18 21:40:47,631 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 54 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:47,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 318 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 21:40:47,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2023-02-18 21:40:47,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 340. [2023-02-18 21:40:47,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 316 states have (on average 1.3259493670886076) internal successors, (419), 339 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:47,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 419 transitions. [2023-02-18 21:40:47,635 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 419 transitions. Word has length 44 [2023-02-18 21:40:47,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:47,636 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 419 transitions. [2023-02-18 21:40:47,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:47,636 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 419 transitions. [2023-02-18 21:40:47,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-18 21:40:47,636 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:47,636 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] [2023-02-18 21:40:47,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-02-18 21:40:47,637 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:47,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:47,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1519355336, now seen corresponding path program 1 times [2023-02-18 21:40:47,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:47,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987947934] [2023-02-18 21:40:47,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:47,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:47,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:47,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:47,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987947934] [2023-02-18 21:40:47,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987947934] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:47,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:47,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-18 21:40:47,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659022759] [2023-02-18 21:40:47,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:47,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 21:40:47,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:47,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 21:40:47,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-02-18 21:40:47,731 INFO L87 Difference]: Start difference. First operand 340 states and 419 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:47,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:47,974 INFO L93 Difference]: Finished difference Result 370 states and 439 transitions. [2023-02-18 21:40:47,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 21:40:47,975 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-02-18 21:40:47,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:47,976 INFO L225 Difference]: With dead ends: 370 [2023-02-18 21:40:47,976 INFO L226 Difference]: Without dead ends: 370 [2023-02-18 21:40:47,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-02-18 21:40:47,977 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 166 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:47,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 458 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 21:40:47,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-02-18 21:40:47,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 340. [2023-02-18 21:40:47,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 316 states have (on average 1.3227848101265822) internal successors, (418), 339 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:47,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 418 transitions. [2023-02-18 21:40:47,982 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 418 transitions. Word has length 44 [2023-02-18 21:40:47,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:47,982 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 418 transitions. [2023-02-18 21:40:47,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:47,982 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 418 transitions. [2023-02-18 21:40:47,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-18 21:40:47,982 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:47,982 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:40:47,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-02-18 21:40:47,982 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:47,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:47,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1190454621, now seen corresponding path program 1 times [2023-02-18 21:40:47,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:47,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54343683] [2023-02-18 21:40:47,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:47,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:48,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:48,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54343683] [2023-02-18 21:40:48,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54343683] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:48,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:48,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 21:40:48,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024987398] [2023-02-18 21:40:48,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:48,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 21:40:48,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:48,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 21:40:48,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 21:40:48,039 INFO L87 Difference]: Start difference. First operand 340 states and 418 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:48,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:48,107 INFO L93 Difference]: Finished difference Result 287 states and 330 transitions. [2023-02-18 21:40:48,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 21:40:48,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-02-18 21:40:48,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:48,108 INFO L225 Difference]: With dead ends: 287 [2023-02-18 21:40:48,109 INFO L226 Difference]: Without dead ends: 287 [2023-02-18 21:40:48,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-18 21:40:48,109 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 54 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:48,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 504 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:40:48,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-02-18 21:40:48,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 286. [2023-02-18 21:40:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 263 states have (on average 1.2509505703422052) internal successors, (329), 285 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:48,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 329 transitions. [2023-02-18 21:40:48,113 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 329 transitions. Word has length 46 [2023-02-18 21:40:48,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:48,113 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 329 transitions. [2023-02-18 21:40:48,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:48,113 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 329 transitions. [2023-02-18 21:40:48,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-18 21:40:48,114 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:48,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:40:48,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-02-18 21:40:48,114 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr77ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:48,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:48,115 INFO L85 PathProgramCache]: Analyzing trace with hash 120277254, now seen corresponding path program 1 times [2023-02-18 21:40:48,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:48,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490240769] [2023-02-18 21:40:48,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:48,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:48,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 21:40:48,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:48,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490240769] [2023-02-18 21:40:48,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490240769] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:48,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:48,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-18 21:40:48,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343346919] [2023-02-18 21:40:48,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:48,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 21:40:48,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:48,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 21:40:48,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-02-18 21:40:48,230 INFO L87 Difference]: Start difference. First operand 286 states and 329 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:48,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:48,395 INFO L93 Difference]: Finished difference Result 279 states and 317 transitions. [2023-02-18 21:40:48,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 21:40:48,396 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-02-18 21:40:48,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:48,397 INFO L225 Difference]: With dead ends: 279 [2023-02-18 21:40:48,397 INFO L226 Difference]: Without dead ends: 279 [2023-02-18 21:40:48,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-02-18 21:40:48,397 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 290 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:48,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 493 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:40:48,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-02-18 21:40:48,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 263. [2023-02-18 21:40:48,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 240 states have (on average 1.2666666666666666) internal successors, (304), 262 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:48,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 304 transitions. [2023-02-18 21:40:48,401 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 304 transitions. Word has length 49 [2023-02-18 21:40:48,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:48,401 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 304 transitions. [2023-02-18 21:40:48,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:48,401 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 304 transitions. [2023-02-18 21:40:48,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-18 21:40:48,402 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:48,402 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:40:48,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-02-18 21:40:48,402 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:48,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:48,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1590511077, now seen corresponding path program 1 times [2023-02-18 21:40:48,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:48,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055464269] [2023-02-18 21:40:48,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:48,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:48,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 21:40:48,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:48,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055464269] [2023-02-18 21:40:48,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055464269] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 21:40:48,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 21:40:48,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 21:40:48,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509274414] [2023-02-18 21:40:48,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 21:40:48,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 21:40:48,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:48,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 21:40:48,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 21:40:48,483 INFO L87 Difference]: Start difference. First operand 263 states and 304 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:48,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:48,546 INFO L93 Difference]: Finished difference Result 277 states and 318 transitions. [2023-02-18 21:40:48,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 21:40:48,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-02-18 21:40:48,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:48,547 INFO L225 Difference]: With dead ends: 277 [2023-02-18 21:40:48,547 INFO L226 Difference]: Without dead ends: 277 [2023-02-18 21:40:48,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-18 21:40:48,548 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 19 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:48,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 474 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 21:40:48,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-02-18 21:40:48,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 266. [2023-02-18 21:40:48,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 243 states have (on average 1.2592592592592593) internal successors, (306), 265 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:48,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 306 transitions. [2023-02-18 21:40:48,552 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 306 transitions. Word has length 50 [2023-02-18 21:40:48,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:48,552 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 306 transitions. [2023-02-18 21:40:48,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:48,552 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 306 transitions. [2023-02-18 21:40:48,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-18 21:40:48,553 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:48,553 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:40:48,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-02-18 21:40:48,553 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:48,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:48,553 INFO L85 PathProgramCache]: Analyzing trace with hash -97333738, now seen corresponding path program 1 times [2023-02-18 21:40:48,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:48,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862365408] [2023-02-18 21:40:48,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:48,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:48,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:48,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:48,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862365408] [2023-02-18 21:40:48,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862365408] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 21:40:48,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253042503] [2023-02-18 21:40:48,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:48,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 21:40:48,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 21:40:48,730 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 21:40:48,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 21:40:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:48,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-18 21:40:48,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:40:48,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 21:40:48,862 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:48,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2023-02-18 21:40:48,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 21:40:48,908 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:48,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 66 [2023-02-18 21:40:48,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 32 [2023-02-18 21:40:48,940 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:48,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 66 [2023-02-18 21:40:48,995 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:48,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 65 [2023-02-18 21:40:49,000 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 21:40:49,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 32 [2023-02-18 21:40:49,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:49,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:40:49,165 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:49,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2023-02-18 21:40:49,167 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:49,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 37 [2023-02-18 21:40:49,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-02-18 21:40:49,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:49,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253042503] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 21:40:49,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 21:40:49,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-02-18 21:40:49,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162880437] [2023-02-18 21:40:49,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 21:40:49,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-18 21:40:49,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:49,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-18 21:40:49,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=736, Unknown=5, NotChecked=0, Total=870 [2023-02-18 21:40:49,418 INFO L87 Difference]: Start difference. First operand 266 states and 306 transitions. Second operand has 30 states, 29 states have (on average 5.206896551724138) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:50,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:50,437 INFO L93 Difference]: Finished difference Result 479 states and 523 transitions. [2023-02-18 21:40:50,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-18 21:40:50,437 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 5.206896551724138) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-02-18 21:40:50,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:50,439 INFO L225 Difference]: With dead ends: 479 [2023-02-18 21:40:50,439 INFO L226 Difference]: Without dead ends: 479 [2023-02-18 21:40:50,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=282, Invalid=1195, Unknown=5, NotChecked=0, Total=1482 [2023-02-18 21:40:50,440 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 849 mSDsluCounter, 1797 mSDsCounter, 0 mSdLazyCounter, 2000 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:50,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 1907 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2000 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-18 21:40:50,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-02-18 21:40:50,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 312. [2023-02-18 21:40:50,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 289 states have (on average 1.2560553633217992) internal successors, (363), 311 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:50,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 363 transitions. [2023-02-18 21:40:50,444 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 363 transitions. Word has length 52 [2023-02-18 21:40:50,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:50,444 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 363 transitions. [2023-02-18 21:40:50,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 5.206896551724138) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:50,444 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 363 transitions. [2023-02-18 21:40:50,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-18 21:40:50,444 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:50,444 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:40:50,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 21:40:50,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 21:40:50,645 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:50,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:50,645 INFO L85 PathProgramCache]: Analyzing trace with hash -97333737, now seen corresponding path program 1 times [2023-02-18 21:40:50,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:50,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111331915] [2023-02-18 21:40:50,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:50,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:50,866 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:50,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:50,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111331915] [2023-02-18 21:40:50,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111331915] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 21:40:50,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684073792] [2023-02-18 21:40:50,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:50,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 21:40:50,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 21:40:50,868 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 21:40:50,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 21:40:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:50,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-18 21:40:50,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:40:50,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 21:40:51,007 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:51,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-18 21:40:51,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 21:40:51,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 21:40:51,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 21:40:51,063 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:51,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2023-02-18 21:40:51,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-18 21:40:51,069 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:51,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 43 [2023-02-18 21:40:51,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2023-02-18 21:40:51,103 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:51,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 51 [2023-02-18 21:40:51,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-18 21:40:51,152 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:51,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 42 [2023-02-18 21:40:51,156 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 21:40:51,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-18 21:40:51,162 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 21:40:51,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-18 21:40:51,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:51,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 21:40:51,501 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:51,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 40 [2023-02-18 21:40:51,503 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:51,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-02-18 21:40:51,510 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:51,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 59 [2023-02-18 21:40:51,516 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:51,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 89 [2023-02-18 21:40:51,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2023-02-18 21:40:51,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2023-02-18 21:40:51,537 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:51,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2023-02-18 21:40:51,540 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 21:40:51,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 21:40:51,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 21:40:51,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-02-18 21:40:51,588 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:51,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 213 treesize of output 218 [2023-02-18 21:40:51,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:51,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684073792] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 21:40:51,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 21:40:51,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-02-18 21:40:51,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411589384] [2023-02-18 21:40:51,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 21:40:51,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-18 21:40:51,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 21:40:51,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-18 21:40:51,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=889, Unknown=7, NotChecked=0, Total=992 [2023-02-18 21:40:51,702 INFO L87 Difference]: Start difference. First operand 312 states and 363 transitions. Second operand has 32 states, 31 states have (on average 4.967741935483871) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:53,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 21:40:53,113 INFO L93 Difference]: Finished difference Result 460 states and 503 transitions. [2023-02-18 21:40:53,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-18 21:40:53,114 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 4.967741935483871) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-02-18 21:40:53,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 21:40:53,115 INFO L225 Difference]: With dead ends: 460 [2023-02-18 21:40:53,115 INFO L226 Difference]: Without dead ends: 460 [2023-02-18 21:40:53,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=449, Invalid=2514, Unknown=7, NotChecked=0, Total=2970 [2023-02-18 21:40:53,117 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 944 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 2074 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 1838 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-18 21:40:53,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 1838 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2074 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-18 21:40:53,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2023-02-18 21:40:53,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 329. [2023-02-18 21:40:53,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 306 states have (on average 1.261437908496732) internal successors, (386), 328 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:53,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 386 transitions. [2023-02-18 21:40:53,122 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 386 transitions. Word has length 52 [2023-02-18 21:40:53,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 21:40:53,123 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 386 transitions. [2023-02-18 21:40:53,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.967741935483871) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:40:53,123 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 386 transitions. [2023-02-18 21:40:53,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-02-18 21:40:53,123 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:40:53,123 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 21:40:53,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 21:40:53,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-02-18 21:40:53,347 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-18 21:40:53,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:40:53,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2084299753, now seen corresponding path program 1 times [2023-02-18 21:40:53,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:40:53,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895086968] [2023-02-18 21:40:53,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:53,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:40:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:53,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 21:40:53,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 21:40:53,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895086968] [2023-02-18 21:40:53,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895086968] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 21:40:53,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815687116] [2023-02-18 21:40:53,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:40:53,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 21:40:53,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 21:40:53,712 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 21:40:53,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 21:40:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 21:40:53,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-18 21:40:53,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 21:40:53,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 21:40:53,838 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:53,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2023-02-18 21:40:53,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-18 21:40:53,866 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:53,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 49 [2023-02-18 21:40:53,889 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:53,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 49 [2023-02-18 21:40:53,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 1 [2023-02-18 21:40:53,917 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:53,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 99 [2023-02-18 21:40:53,944 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:53,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 66 [2023-02-18 21:40:54,098 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:54,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 354 treesize of output 310 [2023-02-18 21:40:54,107 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:54,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 215 treesize of output 235 [2023-02-18 21:40:54,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2023-02-18 21:40:54,341 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:54,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 354 treesize of output 310 [2023-02-18 21:40:54,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2023-02-18 21:40:54,352 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:54,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 215 treesize of output 235 [2023-02-18 21:40:55,011 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 21:40:55,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 613 treesize of output 622