./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 26d01a9c 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-?-26d01a9 [2023-02-17 03:16:09,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 03:16:09,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 03:16:09,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 03:16:09,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 03:16:09,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 03:16:09,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 03:16:09,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 03:16:09,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 03:16:09,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 03:16:09,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 03:16:09,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 03:16:09,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 03:16:09,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 03:16:09,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 03:16:09,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 03:16:09,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 03:16:09,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 03:16:09,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 03:16:09,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 03:16:09,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 03:16:09,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 03:16:09,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 03:16:09,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 03:16:09,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 03:16:09,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 03:16:09,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 03:16:09,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 03:16:09,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 03:16:09,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 03:16:09,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 03:16:09,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 03:16:09,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 03:16:09,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 03:16:09,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 03:16:09,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 03:16:09,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 03:16:09,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 03:16:09,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 03:16:09,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 03:16:09,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 03:16:09,100 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-17 03:16:09,113 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 03:16:09,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 03:16:09,114 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 03:16:09,114 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 03:16:09,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 03:16:09,114 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 03:16:09,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 03:16:09,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 03:16:09,115 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 03:16:09,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 03:16:09,116 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 03:16:09,116 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 03:16:09,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 03:16:09,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 03:16:09,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 03:16:09,117 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-17 03:16:09,117 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-17 03:16:09,117 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-17 03:16:09,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 03:16:09,117 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-17 03:16:09,117 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 03:16:09,117 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 03:16:09,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 03:16:09,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 03:16:09,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 03:16:09,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 03:16:09,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 03:16:09,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 03:16:09,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 03:16:09,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 03:16:09,119 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 03:16:09,119 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 03:16:09,120 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 03:16:09,120 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 03:16:09,120 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba1a5c8c8cff607fde50280cfe0e0975858a4c6ed38f8443d26bb1773b66a31d [2023-02-17 03:16:09,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 03:16:09,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 03:16:09,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 03:16:09,379 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 03:16:09,379 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 03:16:09,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-01-1.i [2023-02-17 03:16:10,381 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 03:16:10,584 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 03:16:10,587 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i [2023-02-17 03:16:10,595 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62460d982/4c8d6671a68c4ca08111b518f4d5eaff/FLAG2b33c6de2 [2023-02-17 03:16:10,605 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62460d982/4c8d6671a68c4ca08111b518f4d5eaff [2023-02-17 03:16:10,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 03:16:10,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 03:16:10,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 03:16:10,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 03:16:10,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 03:16:10,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 03:16:10" (1/1) ... [2023-02-17 03:16:10,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb7ffdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:10, skipping insertion in model container [2023-02-17 03:16:10,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 03:16:10" (1/1) ... [2023-02-17 03:16:10,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 03:16:10,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 03:16:10,827 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] [2023-02-17 03:16:10,838 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] [2023-02-17 03:16:10,841 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] [2023-02-17 03:16:10,842 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] [2023-02-17 03:16:10,845 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] [2023-02-17 03:16:10,846 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] [2023-02-17 03:16:10,848 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] [2023-02-17 03:16:10,850 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] [2023-02-17 03:16:10,851 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] [2023-02-17 03:16:10,851 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] [2023-02-17 03:16:10,853 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] [2023-02-17 03:16:10,855 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] [2023-02-17 03:16:10,855 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] [2023-02-17 03:16:10,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 03:16:10,870 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 03:16:10,896 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] [2023-02-17 03:16:10,898 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] [2023-02-17 03:16:10,899 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] [2023-02-17 03:16:10,899 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] [2023-02-17 03:16:10,901 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] [2023-02-17 03:16:10,901 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] [2023-02-17 03:16:10,904 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] [2023-02-17 03:16:10,921 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] [2023-02-17 03:16:10,921 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] [2023-02-17 03:16:10,922 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] [2023-02-17 03:16:10,922 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] [2023-02-17 03:16:10,923 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] [2023-02-17 03:16:10,923 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] [2023-02-17 03:16:10,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 03:16:10,948 INFO L208 MainTranslator]: Completed translation [2023-02-17 03:16:10,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:10 WrapperNode [2023-02-17 03:16:10,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 03:16:10,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 03:16:10,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 03:16:10,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 03:16:10,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:10" (1/1) ... [2023-02-17 03:16:10,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:10" (1/1) ... [2023-02-17 03:16:10,994 INFO L138 Inliner]: procedures = 119, calls = 41, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 227 [2023-02-17 03:16:10,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 03:16:10,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 03:16:10,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 03:16:10,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 03:16:11,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:10" (1/1) ... [2023-02-17 03:16:11,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:10" (1/1) ... [2023-02-17 03:16:11,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:10" (1/1) ... [2023-02-17 03:16:11,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:10" (1/1) ... [2023-02-17 03:16:11,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:10" (1/1) ... [2023-02-17 03:16:11,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:10" (1/1) ... [2023-02-17 03:16:11,022 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:10" (1/1) ... [2023-02-17 03:16:11,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:10" (1/1) ... [2023-02-17 03:16:11,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 03:16:11,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 03:16:11,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 03:16:11,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 03:16:11,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:10" (1/1) ... [2023-02-17 03:16:11,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 03:16:11,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:16:11,051 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) [2023-02-17 03:16:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 03:16:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 03:16:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-17 03:16:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-17 03:16:11,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 03:16:11,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 03:16:11,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 03:16:11,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 03:16:11,067 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 [2023-02-17 03:16:11,174 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 03:16:11,175 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 03:16:11,579 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 03:16:11,596 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 03:16:11,599 INFO L300 CfgBuilder]: Removed 30 assume(true) statements. [2023-02-17 03:16:11,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 03:16:11 BoogieIcfgContainer [2023-02-17 03:16:11,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 03:16:11,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 03:16:11,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 03:16:11,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 03:16:11,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 03:16:10" (1/3) ... [2023-02-17 03:16:11,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc2a0c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 03:16:11, skipping insertion in model container [2023-02-17 03:16:11,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:16:10" (2/3) ... [2023-02-17 03:16:11,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc2a0c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 03:16:11, skipping insertion in model container [2023-02-17 03:16:11,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 03:16:11" (3/3) ... [2023-02-17 03:16:11,607 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-01-1.i [2023-02-17 03:16:11,617 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 03:16:11,618 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 78 error locations. [2023-02-17 03:16:11,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 03:16:11,650 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;@7f61a2fa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 03:16:11,650 INFO L358 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2023-02-17 03:16:11,653 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) [2023-02-17 03:16:11,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-17 03:16:11,656 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:11,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-17 03:16:11,657 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)] === [2023-02-17 03:16:11,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:11,660 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2023-02-17 03:16:11,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:11,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222040249] [2023-02-17 03:16:11,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:11,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:11,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:11,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:11,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222040249] [2023-02-17 03:16:11,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222040249] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:11,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:11,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 03:16:11,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702749735] [2023-02-17 03:16:11,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:11,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:16:11,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:11,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:16:11,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:16:11,837 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) [2023-02-17 03:16:11,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:11,985 INFO L93 Difference]: Finished difference Result 192 states and 201 transitions. [2023-02-17 03:16:11,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:16:11,987 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 [2023-02-17 03:16:11,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:11,992 INFO L225 Difference]: With dead ends: 192 [2023-02-17 03:16:11,993 INFO L226 Difference]: Without dead ends: 188 [2023-02-17 03:16:11,994 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 [2023-02-17 03:16:11,996 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 [2023-02-17 03:16:11,996 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] [2023-02-17 03:16:12,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-02-17 03:16:12,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 183. [2023-02-17 03:16:12,032 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) [2023-02-17 03:16:12,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 195 transitions. [2023-02-17 03:16:12,034 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 195 transitions. Word has length 3 [2023-02-17 03:16:12,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:12,034 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 195 transitions. [2023-02-17 03:16:12,034 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) [2023-02-17 03:16:12,035 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 195 transitions. [2023-02-17 03:16:12,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-17 03:16:12,035 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:12,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-17 03:16:12,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 03:16:12,035 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)] === [2023-02-17 03:16:12,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:12,036 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-02-17 03:16:12,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:12,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060988159] [2023-02-17 03:16:12,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:12,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:12,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:12,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:12,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060988159] [2023-02-17 03:16:12,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060988159] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:12,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:12,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 03:16:12,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537573878] [2023-02-17 03:16:12,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:12,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:16:12,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:12,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:16:12,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:16:12,097 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) [2023-02-17 03:16:12,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:12,204 INFO L93 Difference]: Finished difference Result 213 states and 224 transitions. [2023-02-17 03:16:12,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:16:12,209 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 [2023-02-17 03:16:12,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:12,214 INFO L225 Difference]: With dead ends: 213 [2023-02-17 03:16:12,214 INFO L226 Difference]: Without dead ends: 213 [2023-02-17 03:16:12,214 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 [2023-02-17 03:16:12,215 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 [2023-02-17 03:16:12,217 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] [2023-02-17 03:16:12,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-02-17 03:16:12,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 193. [2023-02-17 03:16:12,227 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) [2023-02-17 03:16:12,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 216 transitions. [2023-02-17 03:16:12,228 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 216 transitions. Word has length 3 [2023-02-17 03:16:12,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:12,229 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 216 transitions. [2023-02-17 03:16:12,229 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) [2023-02-17 03:16:12,229 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 216 transitions. [2023-02-17 03:16:12,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-17 03:16:12,229 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:12,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-17 03:16:12,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 03:16:12,229 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)] === [2023-02-17 03:16:12,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:12,230 INFO L85 PathProgramCache]: Analyzing trace with hash 28691969, now seen corresponding path program 1 times [2023-02-17 03:16:12,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:12,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363422599] [2023-02-17 03:16:12,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:12,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:12,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:12,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:12,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363422599] [2023-02-17 03:16:12,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363422599] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:12,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:12,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 03:16:12,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855758736] [2023-02-17 03:16:12,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:12,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:16:12,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:12,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:16:12,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:16:12,289 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) [2023-02-17 03:16:12,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:12,317 INFO L93 Difference]: Finished difference Result 208 states and 219 transitions. [2023-02-17 03:16:12,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:16:12,317 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 [2023-02-17 03:16:12,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:12,318 INFO L225 Difference]: With dead ends: 208 [2023-02-17 03:16:12,318 INFO L226 Difference]: Without dead ends: 208 [2023-02-17 03:16:12,318 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 [2023-02-17 03:16:12,320 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 [2023-02-17 03:16:12,321 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] [2023-02-17 03:16:12,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-02-17 03:16:12,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 191. [2023-02-17 03:16:12,338 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) [2023-02-17 03:16:12,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 213 transitions. [2023-02-17 03:16:12,342 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 213 transitions. Word has length 5 [2023-02-17 03:16:12,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:12,342 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 213 transitions. [2023-02-17 03:16:12,343 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) [2023-02-17 03:16:12,343 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 213 transitions. [2023-02-17 03:16:12,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-17 03:16:12,343 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:12,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:16:12,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 03:16:12,344 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)] === [2023-02-17 03:16:12,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:12,344 INFO L85 PathProgramCache]: Analyzing trace with hash -618617197, now seen corresponding path program 1 times [2023-02-17 03:16:12,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:12,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130616047] [2023-02-17 03:16:12,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:12,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:12,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:12,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:12,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130616047] [2023-02-17 03:16:12,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130616047] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:12,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:12,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 03:16:12,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446390392] [2023-02-17 03:16:12,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:12,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 03:16:12,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:12,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 03:16:12,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 03:16:12,497 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) [2023-02-17 03:16:12,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:12,628 INFO L93 Difference]: Finished difference Result 190 states and 212 transitions. [2023-02-17 03:16:12,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:16:12,629 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 [2023-02-17 03:16:12,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:12,630 INFO L225 Difference]: With dead ends: 190 [2023-02-17 03:16:12,630 INFO L226 Difference]: Without dead ends: 190 [2023-02-17 03:16:12,630 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 [2023-02-17 03:16:12,632 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 [2023-02-17 03:16:12,634 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] [2023-02-17 03:16:12,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-02-17 03:16:12,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2023-02-17 03:16:12,641 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) [2023-02-17 03:16:12,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 212 transitions. [2023-02-17 03:16:12,642 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 212 transitions. Word has length 11 [2023-02-17 03:16:12,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:12,642 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 212 transitions. [2023-02-17 03:16:12,643 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) [2023-02-17 03:16:12,643 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 212 transitions. [2023-02-17 03:16:12,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-17 03:16:12,644 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:12,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:16:12,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 03:16:12,644 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)] === [2023-02-17 03:16:12,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:12,645 INFO L85 PathProgramCache]: Analyzing trace with hash -618617196, now seen corresponding path program 1 times [2023-02-17 03:16:12,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:12,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554432794] [2023-02-17 03:16:12,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:12,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:12,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:12,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:12,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554432794] [2023-02-17 03:16:12,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554432794] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:12,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:12,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 03:16:12,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913379270] [2023-02-17 03:16:12,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:12,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 03:16:12,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:12,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 03:16:12,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 03:16:12,837 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) [2023-02-17 03:16:12,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:12,952 INFO L93 Difference]: Finished difference Result 189 states and 211 transitions. [2023-02-17 03:16:12,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:16:12,953 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 [2023-02-17 03:16:12,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:12,953 INFO L225 Difference]: With dead ends: 189 [2023-02-17 03:16:12,954 INFO L226 Difference]: Without dead ends: 189 [2023-02-17 03:16:12,954 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 [2023-02-17 03:16:12,954 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 [2023-02-17 03:16:12,954 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] [2023-02-17 03:16:12,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-02-17 03:16:12,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2023-02-17 03:16:12,957 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) [2023-02-17 03:16:12,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 211 transitions. [2023-02-17 03:16:12,957 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 211 transitions. Word has length 11 [2023-02-17 03:16:12,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:12,958 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 211 transitions. [2023-02-17 03:16:12,958 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) [2023-02-17 03:16:12,958 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 211 transitions. [2023-02-17 03:16:12,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-17 03:16:12,958 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:12,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:16:12,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 03:16:12,959 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)] === [2023-02-17 03:16:12,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:12,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2054096635, now seen corresponding path program 1 times [2023-02-17 03:16:12,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:12,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980038496] [2023-02-17 03:16:12,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:12,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:12,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:12,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:12,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980038496] [2023-02-17 03:16:12,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980038496] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:12,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:12,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 03:16:12,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272781914] [2023-02-17 03:16:12,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:12,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:16:12,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:12,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:16:12,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:16:12,984 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) [2023-02-17 03:16:12,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:12,991 INFO L93 Difference]: Finished difference Result 190 states and 212 transitions. [2023-02-17 03:16:12,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:16:12,991 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 [2023-02-17 03:16:12,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:12,992 INFO L225 Difference]: With dead ends: 190 [2023-02-17 03:16:12,992 INFO L226 Difference]: Without dead ends: 190 [2023-02-17 03:16:12,992 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 [2023-02-17 03:16:12,993 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 [2023-02-17 03:16:12,993 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] [2023-02-17 03:16:12,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-02-17 03:16:12,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2023-02-17 03:16:12,996 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) [2023-02-17 03:16:12,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 212 transitions. [2023-02-17 03:16:12,997 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 212 transitions. Word has length 13 [2023-02-17 03:16:12,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:12,998 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 212 transitions. [2023-02-17 03:16:12,998 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) [2023-02-17 03:16:12,999 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 212 transitions. [2023-02-17 03:16:12,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-17 03:16:12,999 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:12,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:16:13,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-17 03:16:13,001 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)] === [2023-02-17 03:16:13,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:13,001 INFO L85 PathProgramCache]: Analyzing trace with hash 479764253, now seen corresponding path program 1 times [2023-02-17 03:16:13,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:13,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451118419] [2023-02-17 03:16:13,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:13,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:13,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:13,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:13,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451118419] [2023-02-17 03:16:13,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451118419] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:13,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:13,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-17 03:16:13,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342123894] [2023-02-17 03:16:13,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:13,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 03:16:13,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:13,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 03:16:13,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-17 03:16:13,097 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) [2023-02-17 03:16:13,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:13,273 INFO L93 Difference]: Finished difference Result 190 states and 211 transitions. [2023-02-17 03:16:13,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 03:16:13,273 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 [2023-02-17 03:16:13,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:13,274 INFO L225 Difference]: With dead ends: 190 [2023-02-17 03:16:13,274 INFO L226 Difference]: Without dead ends: 190 [2023-02-17 03:16:13,274 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 [2023-02-17 03:16:13,274 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, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:13,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 441 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:16:13,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-02-17 03:16:13,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2023-02-17 03:16:13,277 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) [2023-02-17 03:16:13,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 211 transitions. [2023-02-17 03:16:13,277 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 211 transitions. Word has length 14 [2023-02-17 03:16:13,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:13,277 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 211 transitions. [2023-02-17 03:16:13,277 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) [2023-02-17 03:16:13,278 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 211 transitions. [2023-02-17 03:16:13,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-17 03:16:13,278 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:13,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:16:13,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-17 03:16:13,278 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)] === [2023-02-17 03:16:13,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:13,279 INFO L85 PathProgramCache]: Analyzing trace with hash 479764254, now seen corresponding path program 1 times [2023-02-17 03:16:13,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:13,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282383543] [2023-02-17 03:16:13,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:13,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:13,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:13,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:13,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282383543] [2023-02-17 03:16:13,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282383543] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:13,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:13,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-17 03:16:13,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968023372] [2023-02-17 03:16:13,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:13,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 03:16:13,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:13,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 03:16:13,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-17 03:16:13,456 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) [2023-02-17 03:16:13,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:13,689 INFO L93 Difference]: Finished difference Result 189 states and 210 transitions. [2023-02-17 03:16:13,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 03:16:13,690 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 [2023-02-17 03:16:13,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:13,691 INFO L225 Difference]: With dead ends: 189 [2023-02-17 03:16:13,691 INFO L226 Difference]: Without dead ends: 189 [2023-02-17 03:16:13,691 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 [2023-02-17 03:16:13,692 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 [2023-02-17 03:16:13,692 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] [2023-02-17 03:16:13,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-02-17 03:16:13,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2023-02-17 03:16:13,695 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) [2023-02-17 03:16:13,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 210 transitions. [2023-02-17 03:16:13,696 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 210 transitions. Word has length 14 [2023-02-17 03:16:13,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:13,696 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 210 transitions. [2023-02-17 03:16:13,696 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) [2023-02-17 03:16:13,696 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 210 transitions. [2023-02-17 03:16:13,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 03:16:13,697 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:13,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:16:13,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-17 03:16:13,698 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)] === [2023-02-17 03:16:13,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:13,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1699725866, now seen corresponding path program 1 times [2023-02-17 03:16:13,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:13,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289426228] [2023-02-17 03:16:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:13,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:13,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:13,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289426228] [2023-02-17 03:16:13,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289426228] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:13,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:13,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-17 03:16:13,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284166883] [2023-02-17 03:16:13,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:13,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 03:16:13,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:13,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 03:16:13,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-17 03:16:13,780 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) [2023-02-17 03:16:13,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:13,884 INFO L93 Difference]: Finished difference Result 275 states and 303 transitions. [2023-02-17 03:16:13,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 03:16:13,885 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 [2023-02-17 03:16:13,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:13,885 INFO L225 Difference]: With dead ends: 275 [2023-02-17 03:16:13,886 INFO L226 Difference]: Without dead ends: 275 [2023-02-17 03:16:13,886 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 [2023-02-17 03:16:13,888 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 [2023-02-17 03:16:13,888 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] [2023-02-17 03:16:13,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-02-17 03:16:13,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 185. [2023-02-17 03:16:13,890 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) [2023-02-17 03:16:13,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 207 transitions. [2023-02-17 03:16:13,891 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 207 transitions. Word has length 15 [2023-02-17 03:16:13,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:13,891 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 207 transitions. [2023-02-17 03:16:13,891 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) [2023-02-17 03:16:13,892 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 207 transitions. [2023-02-17 03:16:13,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-17 03:16:13,892 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:13,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:16:13,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-17 03:16:13,893 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)] === [2023-02-17 03:16:13,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:13,893 INFO L85 PathProgramCache]: Analyzing trace with hash -99613104, now seen corresponding path program 1 times [2023-02-17 03:16:13,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:13,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938707760] [2023-02-17 03:16:13,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:13,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:13,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:13,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:13,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938707760] [2023-02-17 03:16:13,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938707760] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:13,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:13,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 03:16:13,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357886282] [2023-02-17 03:16:13,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:13,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 03:16:13,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:13,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 03:16:13,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 03:16:13,957 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) [2023-02-17 03:16:14,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:14,028 INFO L93 Difference]: Finished difference Result 276 states and 303 transitions. [2023-02-17 03:16:14,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 03:16:14,028 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 [2023-02-17 03:16:14,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:14,029 INFO L225 Difference]: With dead ends: 276 [2023-02-17 03:16:14,030 INFO L226 Difference]: Without dead ends: 276 [2023-02-17 03:16:14,030 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 [2023-02-17 03:16:14,031 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 [2023-02-17 03:16:14,031 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] [2023-02-17 03:16:14,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-02-17 03:16:14,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 188. [2023-02-17 03:16:14,034 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) [2023-02-17 03:16:14,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 210 transitions. [2023-02-17 03:16:14,035 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 210 transitions. Word has length 17 [2023-02-17 03:16:14,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:14,035 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 210 transitions. [2023-02-17 03:16:14,035 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) [2023-02-17 03:16:14,035 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 210 transitions. [2023-02-17 03:16:14,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 03:16:14,036 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:14,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:16:14,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-17 03:16:14,037 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)] === [2023-02-17 03:16:14,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:14,039 INFO L85 PathProgramCache]: Analyzing trace with hash -582241035, now seen corresponding path program 1 times [2023-02-17 03:16:14,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:14,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151670162] [2023-02-17 03:16:14,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:14,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:14,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:14,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:14,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151670162] [2023-02-17 03:16:14,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151670162] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:14,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:14,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 03:16:14,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055605608] [2023-02-17 03:16:14,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:14,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 03:16:14,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:14,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 03:16:14,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 03:16:14,127 INFO L87 Difference]: Start difference. First operand 188 states and 210 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 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) [2023-02-17 03:16:14,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:14,278 INFO L93 Difference]: Finished difference Result 248 states and 263 transitions. [2023-02-17 03:16:14,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 03:16:14,279 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 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 [2023-02-17 03:16:14,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:14,279 INFO L225 Difference]: With dead ends: 248 [2023-02-17 03:16:14,279 INFO L226 Difference]: Without dead ends: 248 [2023-02-17 03:16:14,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-17 03:16:14,280 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 477 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:14,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 186 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:16:14,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-02-17 03:16:14,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 211. [2023-02-17 03:16:14,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 154 states have (on average 1.603896103896104) internal successors, (247), 210 states have internal predecessors, (247), 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) [2023-02-17 03:16:14,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 247 transitions. [2023-02-17 03:16:14,283 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 247 transitions. Word has length 19 [2023-02-17 03:16:14,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:14,283 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 247 transitions. [2023-02-17 03:16:14,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 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) [2023-02-17 03:16:14,283 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 247 transitions. [2023-02-17 03:16:14,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-17 03:16:14,283 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:14,283 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] [2023-02-17 03:16:14,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-17 03:16:14,284 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:14,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:14,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1187837214, now seen corresponding path program 1 times [2023-02-17 03:16:14,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:14,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650856322] [2023-02-17 03:16:14,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:14,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:14,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:14,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:14,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650856322] [2023-02-17 03:16:14,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650856322] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:14,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:14,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 03:16:14,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676154992] [2023-02-17 03:16:14,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:14,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 03:16:14,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:14,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 03:16:14,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 03:16:14,305 INFO L87 Difference]: Start difference. First operand 211 states and 247 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) [2023-02-17 03:16:14,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:14,373 INFO L93 Difference]: Finished difference Result 243 states and 257 transitions. [2023-02-17 03:16:14,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 03:16:14,373 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 [2023-02-17 03:16:14,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:14,374 INFO L225 Difference]: With dead ends: 243 [2023-02-17 03:16:14,374 INFO L226 Difference]: Without dead ends: 243 [2023-02-17 03:16:14,375 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 [2023-02-17 03:16:14,375 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 229 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:14,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 277 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:16:14,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-02-17 03:16:14,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 209. [2023-02-17 03:16:14,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 153 states have (on average 1.5947712418300655) internal successors, (244), 208 states have internal predecessors, (244), 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) [2023-02-17 03:16:14,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 244 transitions. [2023-02-17 03:16:14,378 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 244 transitions. Word has length 21 [2023-02-17 03:16:14,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:14,379 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 244 transitions. [2023-02-17 03:16:14,379 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) [2023-02-17 03:16:14,379 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 244 transitions. [2023-02-17 03:16:14,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-17 03:16:14,379 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:14,380 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] [2023-02-17 03:16:14,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-17 03:16:14,380 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:14,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:14,380 INFO L85 PathProgramCache]: Analyzing trace with hash 903845878, now seen corresponding path program 1 times [2023-02-17 03:16:14,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:14,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643878715] [2023-02-17 03:16:14,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:14,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:14,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:14,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:14,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643878715] [2023-02-17 03:16:14,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643878715] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:14,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:14,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 03:16:14,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894281276] [2023-02-17 03:16:14,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:14,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 03:16:14,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:14,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 03:16:14,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 03:16:14,430 INFO L87 Difference]: Start difference. First operand 209 states and 244 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) [2023-02-17 03:16:14,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:14,560 INFO L93 Difference]: Finished difference Result 198 states and 231 transitions. [2023-02-17 03:16:14,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 03:16:14,560 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 [2023-02-17 03:16:14,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:14,561 INFO L225 Difference]: With dead ends: 198 [2023-02-17 03:16:14,561 INFO L226 Difference]: Without dead ends: 198 [2023-02-17 03:16:14,561 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 [2023-02-17 03:16:14,562 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 98 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:14,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 427 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:16:14,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-02-17 03:16:14,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2023-02-17 03:16:14,564 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) [2023-02-17 03:16:14,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 230 transitions. [2023-02-17 03:16:14,565 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 230 transitions. Word has length 23 [2023-02-17 03:16:14,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:14,565 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 230 transitions. [2023-02-17 03:16:14,565 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) [2023-02-17 03:16:14,565 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 230 transitions. [2023-02-17 03:16:14,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-17 03:16:14,566 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:14,566 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] [2023-02-17 03:16:14,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-17 03:16:14,566 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:14,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:14,566 INFO L85 PathProgramCache]: Analyzing trace with hash 903845879, now seen corresponding path program 1 times [2023-02-17 03:16:14,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:14,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859370120] [2023-02-17 03:16:14,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:14,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:14,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:14,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:14,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859370120] [2023-02-17 03:16:14,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859370120] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:14,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:14,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 03:16:14,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017104678] [2023-02-17 03:16:14,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:14,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 03:16:14,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:14,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 03:16:14,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 03:16:14,655 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) [2023-02-17 03:16:14,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:14,786 INFO L93 Difference]: Finished difference Result 190 states and 223 transitions. [2023-02-17 03:16:14,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-17 03:16:14,786 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 [2023-02-17 03:16:14,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:14,787 INFO L225 Difference]: With dead ends: 190 [2023-02-17 03:16:14,787 INFO L226 Difference]: Without dead ends: 190 [2023-02-17 03:16:14,787 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 [2023-02-17 03:16:14,788 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 [2023-02-17 03:16:14,788 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] [2023-02-17 03:16:14,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-02-17 03:16:14,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 183. [2023-02-17 03:16:14,790 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) [2023-02-17 03:16:14,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 215 transitions. [2023-02-17 03:16:14,791 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 215 transitions. Word has length 23 [2023-02-17 03:16:14,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:14,791 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 215 transitions. [2023-02-17 03:16:14,791 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) [2023-02-17 03:16:14,791 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 215 transitions. [2023-02-17 03:16:14,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-17 03:16:14,792 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:14,792 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] [2023-02-17 03:16:14,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-17 03:16:14,792 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:14,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:14,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1012497526, now seen corresponding path program 1 times [2023-02-17 03:16:14,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:14,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104998057] [2023-02-17 03:16:14,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:14,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:14,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:14,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:14,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104998057] [2023-02-17 03:16:14,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104998057] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:14,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:14,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 03:16:14,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368561804] [2023-02-17 03:16:14,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:14,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 03:16:14,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:14,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 03:16:14,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 03:16:14,842 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) [2023-02-17 03:16:14,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:14,919 INFO L93 Difference]: Finished difference Result 186 states and 219 transitions. [2023-02-17 03:16:14,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-17 03:16:14,919 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 [2023-02-17 03:16:14,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:14,920 INFO L225 Difference]: With dead ends: 186 [2023-02-17 03:16:14,920 INFO L226 Difference]: Without dead ends: 186 [2023-02-17 03:16:14,920 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 [2023-02-17 03:16:14,921 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 [2023-02-17 03:16:14,921 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] [2023-02-17 03:16:14,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-02-17 03:16:14,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 179. [2023-02-17 03:16:14,923 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) [2023-02-17 03:16:14,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 211 transitions. [2023-02-17 03:16:14,924 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 211 transitions. Word has length 25 [2023-02-17 03:16:14,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:14,924 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 211 transitions. [2023-02-17 03:16:14,924 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) [2023-02-17 03:16:14,924 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 211 transitions. [2023-02-17 03:16:14,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-17 03:16:14,925 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:14,925 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] [2023-02-17 03:16:14,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-17 03:16:14,925 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:14,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:14,925 INFO L85 PathProgramCache]: Analyzing trace with hash 476921454, now seen corresponding path program 1 times [2023-02-17 03:16:14,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:14,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024927539] [2023-02-17 03:16:14,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:14,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:14,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:14,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:14,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024927539] [2023-02-17 03:16:14,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024927539] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:14,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:14,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 03:16:14,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019582693] [2023-02-17 03:16:14,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:14,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:16:14,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:14,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:16:14,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:16:14,945 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) [2023-02-17 03:16:14,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:14,951 INFO L93 Difference]: Finished difference Result 252 states and 299 transitions. [2023-02-17 03:16:14,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:16:14,951 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 [2023-02-17 03:16:14,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:14,952 INFO L225 Difference]: With dead ends: 252 [2023-02-17 03:16:14,952 INFO L226 Difference]: Without dead ends: 252 [2023-02-17 03:16:14,952 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 [2023-02-17 03:16:14,953 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 [2023-02-17 03:16:14,953 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] [2023-02-17 03:16:14,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-02-17 03:16:14,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 185. [2023-02-17 03:16:14,955 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) [2023-02-17 03:16:14,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 219 transitions. [2023-02-17 03:16:14,956 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 219 transitions. Word has length 27 [2023-02-17 03:16:14,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:14,956 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 219 transitions. [2023-02-17 03:16:14,956 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) [2023-02-17 03:16:14,962 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 219 transitions. [2023-02-17 03:16:14,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-17 03:16:14,963 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:14,963 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] [2023-02-17 03:16:14,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-17 03:16:14,963 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:14,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:14,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1899651814, now seen corresponding path program 1 times [2023-02-17 03:16:14,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:14,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538252773] [2023-02-17 03:16:14,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:14,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:14,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:14,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:14,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538252773] [2023-02-17 03:16:14,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538252773] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:14,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:14,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 03:16:14,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505545279] [2023-02-17 03:16:14,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:14,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:16:14,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:14,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:16:14,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:16:14,984 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) [2023-02-17 03:16:14,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:14,994 INFO L93 Difference]: Finished difference Result 183 states and 216 transitions. [2023-02-17 03:16:14,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:16:14,995 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 [2023-02-17 03:16:14,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:14,995 INFO L225 Difference]: With dead ends: 183 [2023-02-17 03:16:14,996 INFO L226 Difference]: Without dead ends: 183 [2023-02-17 03:16:14,996 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 [2023-02-17 03:16:14,996 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 [2023-02-17 03:16:14,996 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] [2023-02-17 03:16:14,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-02-17 03:16:14,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2023-02-17 03:16:14,998 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) [2023-02-17 03:16:14,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 216 transitions. [2023-02-17 03:16:14,999 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 216 transitions. Word has length 28 [2023-02-17 03:16:14,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:14,999 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 216 transitions. [2023-02-17 03:16:14,999 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) [2023-02-17 03:16:14,999 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 216 transitions. [2023-02-17 03:16:15,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-17 03:16:15,000 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:15,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:16:15,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-17 03:16:15,000 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:15,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:15,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1240331581, now seen corresponding path program 1 times [2023-02-17 03:16:15,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:15,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561151185] [2023-02-17 03:16:15,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:15,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:15,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:15,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:15,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561151185] [2023-02-17 03:16:15,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561151185] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:15,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:15,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-17 03:16:15,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931927016] [2023-02-17 03:16:15,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:15,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 03:16:15,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:15,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 03:16:15,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-17 03:16:15,086 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) [2023-02-17 03:16:15,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:15,304 INFO L93 Difference]: Finished difference Result 308 states and 341 transitions. [2023-02-17 03:16:15,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 03:16:15,304 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 [2023-02-17 03:16:15,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:15,305 INFO L225 Difference]: With dead ends: 308 [2023-02-17 03:16:15,305 INFO L226 Difference]: Without dead ends: 308 [2023-02-17 03:16:15,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-02-17 03:16:15,306 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 380 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:15,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 784 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:16:15,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-02-17 03:16:15,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 216. [2023-02-17 03:16:15,309 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) [2023-02-17 03:16:15,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 254 transitions. [2023-02-17 03:16:15,309 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 254 transitions. Word has length 29 [2023-02-17 03:16:15,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:15,309 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 254 transitions. [2023-02-17 03:16:15,309 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) [2023-02-17 03:16:15,309 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 254 transitions. [2023-02-17 03:16:15,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-17 03:16:15,310 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:15,310 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] [2023-02-17 03:16:15,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-17 03:16:15,310 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:15,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:15,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1786976426, now seen corresponding path program 1 times [2023-02-17 03:16:15,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:15,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078004102] [2023-02-17 03:16:15,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:15,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:15,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:15,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078004102] [2023-02-17 03:16:15,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078004102] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:16:15,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719919422] [2023-02-17 03:16:15,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:15,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:16:15,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:16:15,414 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) [2023-02-17 03:16:15,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 03:16:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:15,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-17 03:16:15,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:16:15,546 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 [2023-02-17 03:16:15,548 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 [2023-02-17 03:16:15,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:16:15,564 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 [2023-02-17 03:16:15,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:16:15,568 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 [2023-02-17 03:16:15,594 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 03:16:15,594 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 [2023-02-17 03:16:15,597 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 03:16:15,597 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:15,598 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 [2023-02-17 03:16:15,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:15,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:16:15,775 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 [2023-02-17 03:16:15,779 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 [2023-02-17 03:16:15,783 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 [2023-02-17 03:16:15,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:16:15,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:15,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719919422] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:16:15,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:16:15,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2023-02-17 03:16:15,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141062234] [2023-02-17 03:16:15,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:16:15,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 03:16:15,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:15,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 03:16:15,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-02-17 03:16:15,795 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) [2023-02-17 03:16:16,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:16,041 INFO L93 Difference]: Finished difference Result 310 states and 344 transitions. [2023-02-17 03:16:16,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 03:16:16,042 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 [2023-02-17 03:16:16,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:16,042 INFO L225 Difference]: With dead ends: 310 [2023-02-17 03:16:16,042 INFO L226 Difference]: Without dead ends: 310 [2023-02-17 03:16:16,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-02-17 03:16:16,043 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 588 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:16,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 677 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:16:16,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-02-17 03:16:16,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 251. [2023-02-17 03:16:16,046 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) [2023-02-17 03:16:16,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 302 transitions. [2023-02-17 03:16:16,047 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 302 transitions. Word has length 31 [2023-02-17 03:16:16,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:16,047 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 302 transitions. [2023-02-17 03:16:16,047 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) [2023-02-17 03:16:16,047 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 302 transitions. [2023-02-17 03:16:16,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-17 03:16:16,048 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:16,048 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] [2023-02-17 03:16:16,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 03:16:16,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:16:16,253 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:16,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:16,254 INFO L85 PathProgramCache]: Analyzing trace with hash 883081196, now seen corresponding path program 1 times [2023-02-17 03:16:16,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:16,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138672428] [2023-02-17 03:16:16,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:16,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:16,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:16,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138672428] [2023-02-17 03:16:16,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138672428] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:16,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:16,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 03:16:16,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289895280] [2023-02-17 03:16:16,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:16,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 03:16:16,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:16,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 03:16:16,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 03:16:16,316 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) [2023-02-17 03:16:16,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:16,407 INFO L93 Difference]: Finished difference Result 250 states and 301 transitions. [2023-02-17 03:16:16,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:16:16,407 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 [2023-02-17 03:16:16,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:16,408 INFO L225 Difference]: With dead ends: 250 [2023-02-17 03:16:16,408 INFO L226 Difference]: Without dead ends: 250 [2023-02-17 03:16:16,408 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 [2023-02-17 03:16:16,409 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 [2023-02-17 03:16:16,409 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] [2023-02-17 03:16:16,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-02-17 03:16:16,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2023-02-17 03:16:16,411 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) [2023-02-17 03:16:16,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 301 transitions. [2023-02-17 03:16:16,412 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 301 transitions. Word has length 33 [2023-02-17 03:16:16,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:16,412 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 301 transitions. [2023-02-17 03:16:16,412 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) [2023-02-17 03:16:16,412 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 301 transitions. [2023-02-17 03:16:16,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-17 03:16:16,412 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:16,412 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] [2023-02-17 03:16:16,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-02-17 03:16:16,413 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:16,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:16,413 INFO L85 PathProgramCache]: Analyzing trace with hash 883081197, now seen corresponding path program 1 times [2023-02-17 03:16:16,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:16,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962968858] [2023-02-17 03:16:16,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:16,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:16,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:16,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:16,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962968858] [2023-02-17 03:16:16,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962968858] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:16,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:16,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 03:16:16,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965611786] [2023-02-17 03:16:16,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:16,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 03:16:16,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:16,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 03:16:16,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 03:16:16,503 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) [2023-02-17 03:16:16,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:16,606 INFO L93 Difference]: Finished difference Result 249 states and 300 transitions. [2023-02-17 03:16:16,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:16:16,606 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 [2023-02-17 03:16:16,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:16,607 INFO L225 Difference]: With dead ends: 249 [2023-02-17 03:16:16,607 INFO L226 Difference]: Without dead ends: 249 [2023-02-17 03:16:16,607 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 [2023-02-17 03:16:16,608 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 [2023-02-17 03:16:16,608 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] [2023-02-17 03:16:16,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-02-17 03:16:16,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2023-02-17 03:16:16,610 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) [2023-02-17 03:16:16,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 300 transitions. [2023-02-17 03:16:16,611 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 300 transitions. Word has length 33 [2023-02-17 03:16:16,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:16,611 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 300 transitions. [2023-02-17 03:16:16,611 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) [2023-02-17 03:16:16,611 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 300 transitions. [2023-02-17 03:16:16,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-17 03:16:16,611 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:16,612 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] [2023-02-17 03:16:16,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-02-17 03:16:16,612 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:16,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:16,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1776374941, now seen corresponding path program 1 times [2023-02-17 03:16:16,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:16,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632465283] [2023-02-17 03:16:16,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:16,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:16,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:16,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:16,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632465283] [2023-02-17 03:16:16,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632465283] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:16,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:16,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-17 03:16:16,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086084329] [2023-02-17 03:16:16,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:16,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 03:16:16,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:16,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 03:16:16,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-02-17 03:16:16,756 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) [2023-02-17 03:16:17,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:17,101 INFO L93 Difference]: Finished difference Result 364 states and 406 transitions. [2023-02-17 03:16:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-17 03:16:17,103 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 [2023-02-17 03:16:17,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:17,105 INFO L225 Difference]: With dead ends: 364 [2023-02-17 03:16:17,105 INFO L226 Difference]: Without dead ends: 364 [2023-02-17 03:16:17,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2023-02-17 03:16:17,105 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 499 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:17,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 837 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 03:16:17,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-02-17 03:16:17,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 250. [2023-02-17 03:16:17,109 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) [2023-02-17 03:16:17,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 298 transitions. [2023-02-17 03:16:17,110 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 298 transitions. Word has length 34 [2023-02-17 03:16:17,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:17,110 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 298 transitions. [2023-02-17 03:16:17,110 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) [2023-02-17 03:16:17,110 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 298 transitions. [2023-02-17 03:16:17,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-17 03:16:17,111 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:17,111 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] [2023-02-17 03:16:17,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-02-17 03:16:17,111 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:17,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:17,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1776374942, now seen corresponding path program 1 times [2023-02-17 03:16:17,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:17,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753912469] [2023-02-17 03:16:17,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:17,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:17,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:17,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:17,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753912469] [2023-02-17 03:16:17,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753912469] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:17,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:17,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-02-17 03:16:17,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248987316] [2023-02-17 03:16:17,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:17,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 03:16:17,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:17,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 03:16:17,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-02-17 03:16:17,386 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) [2023-02-17 03:16:17,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:17,796 INFO L93 Difference]: Finished difference Result 428 states and 464 transitions. [2023-02-17 03:16:17,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-17 03:16:17,797 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 [2023-02-17 03:16:17,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:17,798 INFO L225 Difference]: With dead ends: 428 [2023-02-17 03:16:17,798 INFO L226 Difference]: Without dead ends: 428 [2023-02-17 03:16:17,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2023-02-17 03:16:17,799 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 701 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:17,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 820 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 03:16:17,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2023-02-17 03:16:17,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 256. [2023-02-17 03:16:17,802 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) [2023-02-17 03:16:17,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 305 transitions. [2023-02-17 03:16:17,802 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 305 transitions. Word has length 34 [2023-02-17 03:16:17,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:17,802 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 305 transitions. [2023-02-17 03:16:17,802 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) [2023-02-17 03:16:17,803 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 305 transitions. [2023-02-17 03:16:17,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-17 03:16:17,803 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:17,803 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] [2023-02-17 03:16:17,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-02-17 03:16:17,803 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:17,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:17,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2030948706, now seen corresponding path program 1 times [2023-02-17 03:16:17,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:17,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237832192] [2023-02-17 03:16:17,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:17,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:17,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:17,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:17,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237832192] [2023-02-17 03:16:17,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237832192] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:17,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:17,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 03:16:17,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891665639] [2023-02-17 03:16:17,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:17,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:16:17,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:17,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:16:17,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:16:17,827 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) [2023-02-17 03:16:17,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:17,834 INFO L93 Difference]: Finished difference Result 258 states and 307 transitions. [2023-02-17 03:16:17,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:16:17,834 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 [2023-02-17 03:16:17,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:17,835 INFO L225 Difference]: With dead ends: 258 [2023-02-17 03:16:17,835 INFO L226 Difference]: Without dead ends: 258 [2023-02-17 03:16:17,835 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 [2023-02-17 03:16:17,836 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 [2023-02-17 03:16:17,836 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] [2023-02-17 03:16:17,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-02-17 03:16:17,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2023-02-17 03:16:17,839 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) [2023-02-17 03:16:17,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 307 transitions. [2023-02-17 03:16:17,839 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 307 transitions. Word has length 35 [2023-02-17 03:16:17,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:17,839 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 307 transitions. [2023-02-17 03:16:17,840 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) [2023-02-17 03:16:17,840 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 307 transitions. [2023-02-17 03:16:17,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-17 03:16:17,840 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:17,840 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] [2023-02-17 03:16:17,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-02-17 03:16:17,841 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:17,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:17,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1994309533, now seen corresponding path program 1 times [2023-02-17 03:16:17,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:17,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854616780] [2023-02-17 03:16:17,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:17,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:18,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:18,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:18,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854616780] [2023-02-17 03:16:18,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854616780] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:18,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:18,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-02-17 03:16:18,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769975729] [2023-02-17 03:16:18,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:18,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-17 03:16:18,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:18,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-17 03:16:18,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-02-17 03:16:18,196 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) [2023-02-17 03:16:18,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:18,717 INFO L93 Difference]: Finished difference Result 420 states and 456 transitions. [2023-02-17 03:16:18,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-17 03:16:18,717 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 [2023-02-17 03:16:18,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:18,718 INFO L225 Difference]: With dead ends: 420 [2023-02-17 03:16:18,718 INFO L226 Difference]: Without dead ends: 420 [2023-02-17 03:16:18,719 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 [2023-02-17 03:16:18,719 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 569 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:18,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 1303 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-17 03:16:18,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2023-02-17 03:16:18,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 258. [2023-02-17 03:16:18,722 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) [2023-02-17 03:16:18,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 306 transitions. [2023-02-17 03:16:18,723 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 306 transitions. Word has length 36 [2023-02-17 03:16:18,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:18,723 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 306 transitions. [2023-02-17 03:16:18,723 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) [2023-02-17 03:16:18,723 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 306 transitions. [2023-02-17 03:16:18,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-17 03:16:18,723 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:18,723 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] [2023-02-17 03:16:18,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-02-17 03:16:18,723 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:18,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:18,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1529477485, now seen corresponding path program 1 times [2023-02-17 03:16:18,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:18,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939953957] [2023-02-17 03:16:18,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:18,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:18,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:16:18,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:18,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939953957] [2023-02-17 03:16:18,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939953957] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:18,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:18,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-17 03:16:18,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405920673] [2023-02-17 03:16:18,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:18,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 03:16:18,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:18,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 03:16:18,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-02-17 03:16:18,783 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) [2023-02-17 03:16:18,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:18,894 INFO L93 Difference]: Finished difference Result 273 states and 321 transitions. [2023-02-17 03:16:18,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 03:16:18,894 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 [2023-02-17 03:16:18,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:18,895 INFO L225 Difference]: With dead ends: 273 [2023-02-17 03:16:18,895 INFO L226 Difference]: Without dead ends: 273 [2023-02-17 03:16:18,896 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 [2023-02-17 03:16:18,896 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 39 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:18,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 516 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:16:18,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-02-17 03:16:18,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 267. [2023-02-17 03:16:18,901 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) [2023-02-17 03:16:18,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 315 transitions. [2023-02-17 03:16:18,901 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 315 transitions. Word has length 36 [2023-02-17 03:16:18,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:18,902 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 315 transitions. [2023-02-17 03:16:18,902 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) [2023-02-17 03:16:18,902 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 315 transitions. [2023-02-17 03:16:18,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-17 03:16:18,902 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:18,902 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] [2023-02-17 03:16:18,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-02-17 03:16:18,903 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:18,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:18,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1197350168, now seen corresponding path program 1 times [2023-02-17 03:16:18,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:18,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401370401] [2023-02-17 03:16:18,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:18,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:19,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:19,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:19,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401370401] [2023-02-17 03:16:19,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401370401] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:19,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:19,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-17 03:16:19,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225896216] [2023-02-17 03:16:19,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:19,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 03:16:19,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:19,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 03:16:19,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-02-17 03:16:19,092 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) [2023-02-17 03:16:19,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:19,331 INFO L93 Difference]: Finished difference Result 267 states and 315 transitions. [2023-02-17 03:16:19,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-17 03:16:19,332 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 [2023-02-17 03:16:19,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:19,333 INFO L225 Difference]: With dead ends: 267 [2023-02-17 03:16:19,333 INFO L226 Difference]: Without dead ends: 267 [2023-02-17 03:16:19,333 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 [2023-02-17 03:16:19,333 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 77 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:19,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 721 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:16:19,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-02-17 03:16:19,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 266. [2023-02-17 03:16:19,336 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) [2023-02-17 03:16:19,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 314 transitions. [2023-02-17 03:16:19,336 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 314 transitions. Word has length 36 [2023-02-17 03:16:19,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:19,337 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 314 transitions. [2023-02-17 03:16:19,337 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) [2023-02-17 03:16:19,337 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 314 transitions. [2023-02-17 03:16:19,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-17 03:16:19,337 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:19,337 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] [2023-02-17 03:16:19,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-02-17 03:16:19,337 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:19,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:19,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1197350169, now seen corresponding path program 1 times [2023-02-17 03:16:19,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:19,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523272213] [2023-02-17 03:16:19,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:19,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:19,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:19,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:19,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523272213] [2023-02-17 03:16:19,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523272213] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:19,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:19,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-17 03:16:19,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522951380] [2023-02-17 03:16:19,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:19,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 03:16:19,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:19,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 03:16:19,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-02-17 03:16:19,545 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) [2023-02-17 03:16:19,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:19,758 INFO L93 Difference]: Finished difference Result 266 states and 314 transitions. [2023-02-17 03:16:19,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-17 03:16:19,759 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 [2023-02-17 03:16:19,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:19,759 INFO L225 Difference]: With dead ends: 266 [2023-02-17 03:16:19,759 INFO L226 Difference]: Without dead ends: 266 [2023-02-17 03:16:19,760 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 [2023-02-17 03:16:19,760 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 75 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:19,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 642 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:16:19,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-02-17 03:16:19,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 265. [2023-02-17 03:16:19,763 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) [2023-02-17 03:16:19,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 313 transitions. [2023-02-17 03:16:19,763 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 313 transitions. Word has length 36 [2023-02-17 03:16:19,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:19,763 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 313 transitions. [2023-02-17 03:16:19,763 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) [2023-02-17 03:16:19,763 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 313 transitions. [2023-02-17 03:16:19,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-17 03:16:19,764 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:19,764 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] [2023-02-17 03:16:19,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-02-17 03:16:19,764 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:19,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:19,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1824914429, now seen corresponding path program 1 times [2023-02-17 03:16:19,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:19,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336874479] [2023-02-17 03:16:19,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:19,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:19,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:19,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:19,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336874479] [2023-02-17 03:16:19,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336874479] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:19,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:19,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-17 03:16:19,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740385433] [2023-02-17 03:16:19,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:19,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 03:16:19,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:19,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 03:16:19,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-17 03:16:19,819 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) [2023-02-17 03:16:19,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:19,923 INFO L93 Difference]: Finished difference Result 275 states and 324 transitions. [2023-02-17 03:16:19,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 03:16:19,924 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 [2023-02-17 03:16:19,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:19,925 INFO L225 Difference]: With dead ends: 275 [2023-02-17 03:16:19,925 INFO L226 Difference]: Without dead ends: 275 [2023-02-17 03:16:19,925 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 [2023-02-17 03:16:19,926 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 29 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:19,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 564 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:16:19,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-02-17 03:16:19,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 261. [2023-02-17 03:16:19,928 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) [2023-02-17 03:16:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 308 transitions. [2023-02-17 03:16:19,929 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 308 transitions. Word has length 37 [2023-02-17 03:16:19,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:19,929 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 308 transitions. [2023-02-17 03:16:19,929 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) [2023-02-17 03:16:19,929 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 308 transitions. [2023-02-17 03:16:19,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-17 03:16:19,930 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:19,930 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] [2023-02-17 03:16:19,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-02-17 03:16:19,930 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr75ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:19,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:19,931 INFO L85 PathProgramCache]: Analyzing trace with hash -886173384, now seen corresponding path program 1 times [2023-02-17 03:16:19,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:19,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002366052] [2023-02-17 03:16:19,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:19,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:19,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:16:19,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:19,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002366052] [2023-02-17 03:16:19,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002366052] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:19,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:19,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 03:16:19,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598910970] [2023-02-17 03:16:19,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:19,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:16:19,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:19,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:16:19,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:16:19,950 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) [2023-02-17 03:16:19,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:19,976 INFO L93 Difference]: Finished difference Result 274 states and 312 transitions. [2023-02-17 03:16:19,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:16:19,976 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 [2023-02-17 03:16:19,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:19,977 INFO L225 Difference]: With dead ends: 274 [2023-02-17 03:16:19,977 INFO L226 Difference]: Without dead ends: 274 [2023-02-17 03:16:19,978 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 [2023-02-17 03:16:19,978 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 [2023-02-17 03:16:19,978 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] [2023-02-17 03:16:19,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-02-17 03:16:19,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 262. [2023-02-17 03:16:19,981 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) [2023-02-17 03:16:19,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 309 transitions. [2023-02-17 03:16:19,981 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 309 transitions. Word has length 38 [2023-02-17 03:16:19,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:19,982 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 309 transitions. [2023-02-17 03:16:19,982 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) [2023-02-17 03:16:19,982 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 309 transitions. [2023-02-17 03:16:19,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-17 03:16:19,982 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:19,982 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] [2023-02-17 03:16:19,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-02-17 03:16:19,983 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:19,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:19,983 INFO L85 PathProgramCache]: Analyzing trace with hash 196879808, now seen corresponding path program 1 times [2023-02-17 03:16:19,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:19,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280710796] [2023-02-17 03:16:19,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:19,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:20,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:20,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:20,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280710796] [2023-02-17 03:16:20,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280710796] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:20,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:20,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-02-17 03:16:20,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321681032] [2023-02-17 03:16:20,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:20,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-17 03:16:20,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:20,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-17 03:16:20,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-02-17 03:16:20,349 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) [2023-02-17 03:16:20,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:20,807 INFO L93 Difference]: Finished difference Result 422 states and 457 transitions. [2023-02-17 03:16:20,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-17 03:16:20,808 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 [2023-02-17 03:16:20,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:20,809 INFO L225 Difference]: With dead ends: 422 [2023-02-17 03:16:20,809 INFO L226 Difference]: Without dead ends: 422 [2023-02-17 03:16:20,809 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 [2023-02-17 03:16:20,810 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 590 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:20,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 1197 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-17 03:16:20,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-02-17 03:16:20,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 262. [2023-02-17 03:16:20,813 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) [2023-02-17 03:16:20,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 308 transitions. [2023-02-17 03:16:20,813 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 308 transitions. Word has length 39 [2023-02-17 03:16:20,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:20,814 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 308 transitions. [2023-02-17 03:16:20,814 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) [2023-02-17 03:16:20,814 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 308 transitions. [2023-02-17 03:16:20,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-17 03:16:20,814 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:20,814 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] [2023-02-17 03:16:20,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-02-17 03:16:20,814 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:20,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:20,815 INFO L85 PathProgramCache]: Analyzing trace with hash -2051878023, now seen corresponding path program 1 times [2023-02-17 03:16:20,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:20,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353331017] [2023-02-17 03:16:20,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:20,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:20,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:16:20,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:20,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353331017] [2023-02-17 03:16:20,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353331017] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:20,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:20,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 03:16:20,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677736446] [2023-02-17 03:16:20,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:20,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:16:20,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:20,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:16:20,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:16:20,837 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) [2023-02-17 03:16:20,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:20,870 INFO L93 Difference]: Finished difference Result 264 states and 309 transitions. [2023-02-17 03:16:20,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:16:20,870 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 [2023-02-17 03:16:20,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:20,871 INFO L225 Difference]: With dead ends: 264 [2023-02-17 03:16:20,871 INFO L226 Difference]: Without dead ends: 264 [2023-02-17 03:16:20,871 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 [2023-02-17 03:16:20,872 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 [2023-02-17 03:16:20,872 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] [2023-02-17 03:16:20,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-02-17 03:16:20,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 260. [2023-02-17 03:16:20,874 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) [2023-02-17 03:16:20,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 305 transitions. [2023-02-17 03:16:20,875 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 305 transitions. Word has length 41 [2023-02-17 03:16:20,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:20,875 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 305 transitions. [2023-02-17 03:16:20,875 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) [2023-02-17 03:16:20,875 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 305 transitions. [2023-02-17 03:16:20,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-17 03:16:20,876 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:20,876 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] [2023-02-17 03:16:20,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-02-17 03:16:20,876 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:20,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:20,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1173136884, now seen corresponding path program 1 times [2023-02-17 03:16:20,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:20,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517842218] [2023-02-17 03:16:20,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:20,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:20,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:20,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:20,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517842218] [2023-02-17 03:16:20,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517842218] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:16:20,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383484218] [2023-02-17 03:16:20,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:20,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:16:20,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:16:20,953 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) [2023-02-17 03:16:20,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 03:16:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:21,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-17 03:16:21,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:16:21,044 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 [2023-02-17 03:16:21,046 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 [2023-02-17 03:16:21,051 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 [2023-02-17 03:16:21,053 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 [2023-02-17 03:16:21,061 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 [2023-02-17 03:16:21,062 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 [2023-02-17 03:16:21,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:16:21,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:16:21,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:16:21,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383484218] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:16:21,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:16:21,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 9 [2023-02-17 03:16:21,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24028491] [2023-02-17 03:16:21,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:16:21,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 03:16:21,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:21,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 03:16:21,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-02-17 03:16:21,073 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) [2023-02-17 03:16:21,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:21,308 INFO L93 Difference]: Finished difference Result 352 states and 387 transitions. [2023-02-17 03:16:21,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 03:16:21,308 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 [2023-02-17 03:16:21,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:21,309 INFO L225 Difference]: With dead ends: 352 [2023-02-17 03:16:21,309 INFO L226 Difference]: Without dead ends: 352 [2023-02-17 03:16:21,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-02-17 03:16:21,310 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 [2023-02-17 03:16:21,310 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] [2023-02-17 03:16:21,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-02-17 03:16:21,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 284. [2023-02-17 03:16:21,314 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) [2023-02-17 03:16:21,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 339 transitions. [2023-02-17 03:16:21,314 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 339 transitions. Word has length 41 [2023-02-17 03:16:21,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:21,314 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 339 transitions. [2023-02-17 03:16:21,314 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) [2023-02-17 03:16:21,315 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 339 transitions. [2023-02-17 03:16:21,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-17 03:16:21,315 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:21,315 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] [2023-02-17 03:16:21,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 03:16:21,522 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,SelfDestructingSolverStorable32 [2023-02-17 03:16:21,522 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:21,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:21,523 INFO L85 PathProgramCache]: Analyzing trace with hash 816295160, now seen corresponding path program 1 times [2023-02-17 03:16:21,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:21,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694005252] [2023-02-17 03:16:21,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:21,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:21,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:16:21,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:21,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694005252] [2023-02-17 03:16:21,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694005252] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:21,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:21,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-17 03:16:21,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544086775] [2023-02-17 03:16:21,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:21,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-17 03:16:21,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:21,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-17 03:16:21,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-02-17 03:16:21,636 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) [2023-02-17 03:16:21,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:21,918 INFO L93 Difference]: Finished difference Result 348 states and 397 transitions. [2023-02-17 03:16:21,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-17 03:16:21,918 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 [2023-02-17 03:16:21,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:21,919 INFO L225 Difference]: With dead ends: 348 [2023-02-17 03:16:21,919 INFO L226 Difference]: Without dead ends: 348 [2023-02-17 03:16:21,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-02-17 03:16:21,920 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 406 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:21,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 498 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:16:21,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-02-17 03:16:21,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 291. [2023-02-17 03:16:21,923 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) [2023-02-17 03:16:21,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 348 transitions. [2023-02-17 03:16:21,923 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 348 transitions. Word has length 42 [2023-02-17 03:16:21,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:21,923 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 348 transitions. [2023-02-17 03:16:21,923 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) [2023-02-17 03:16:21,924 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 348 transitions. [2023-02-17 03:16:21,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-17 03:16:21,924 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:21,924 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] [2023-02-17 03:16:21,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-02-17 03:16:21,924 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr64REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:21,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:21,925 INFO L85 PathProgramCache]: Analyzing trace with hash 816295161, now seen corresponding path program 1 times [2023-02-17 03:16:21,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:21,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929922733] [2023-02-17 03:16:21,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:21,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:22,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:16:22,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:22,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929922733] [2023-02-17 03:16:22,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929922733] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:22,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:22,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-17 03:16:22,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922377477] [2023-02-17 03:16:22,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:22,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-17 03:16:22,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:22,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-17 03:16:22,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-02-17 03:16:22,092 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) [2023-02-17 03:16:22,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:22,369 INFO L93 Difference]: Finished difference Result 348 states and 397 transitions. [2023-02-17 03:16:22,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-17 03:16:22,369 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 [2023-02-17 03:16:22,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:22,370 INFO L225 Difference]: With dead ends: 348 [2023-02-17 03:16:22,370 INFO L226 Difference]: Without dead ends: 348 [2023-02-17 03:16:22,371 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 [2023-02-17 03:16:22,371 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 249 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:22,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 632 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:16:22,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-02-17 03:16:22,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 297. [2023-02-17 03:16:22,374 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) [2023-02-17 03:16:22,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 355 transitions. [2023-02-17 03:16:22,375 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 355 transitions. Word has length 42 [2023-02-17 03:16:22,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:22,375 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 355 transitions. [2023-02-17 03:16:22,375 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) [2023-02-17 03:16:22,375 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 355 transitions. [2023-02-17 03:16:22,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-17 03:16:22,377 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:22,377 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] [2023-02-17 03:16:22,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-02-17 03:16:22,377 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr77ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:22,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:22,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2007506213, now seen corresponding path program 1 times [2023-02-17 03:16:22,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:22,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956230061] [2023-02-17 03:16:22,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:22,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:22,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:16:22,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:22,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956230061] [2023-02-17 03:16:22,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956230061] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:16:22,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775223159] [2023-02-17 03:16:22,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:22,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:16:22,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:16:22,429 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) [2023-02-17 03:16:22,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 03:16:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:22,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-17 03:16:22,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:16:22,528 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 13 treesize of output 9 [2023-02-17 03:16:22,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:16:22,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:16:22,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:16:22,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775223159] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:16:22,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:16:22,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-02-17 03:16:22,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578511379] [2023-02-17 03:16:22,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:16:22,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 03:16:22,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:22,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 03:16:22,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-17 03:16:22,542 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) [2023-02-17 03:16:22,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:22,610 INFO L93 Difference]: Finished difference Result 328 states and 386 transitions. [2023-02-17 03:16:22,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 03:16:22,611 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 [2023-02-17 03:16:22,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:22,612 INFO L225 Difference]: With dead ends: 328 [2023-02-17 03:16:22,612 INFO L226 Difference]: Without dead ends: 304 [2023-02-17 03:16:22,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-17 03:16:22,612 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, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:22,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 288 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:16:22,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-02-17 03:16:22,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2023-02-17 03:16:22,616 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) [2023-02-17 03:16:22,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 362 transitions. [2023-02-17 03:16:22,617 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 362 transitions. Word has length 42 [2023-02-17 03:16:22,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:22,617 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 362 transitions. [2023-02-17 03:16:22,617 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) [2023-02-17 03:16:22,618 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 362 transitions. [2023-02-17 03:16:22,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-17 03:16:22,618 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:22,618 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] [2023-02-17 03:16:22,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 03:16:22,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:16:22,824 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:22,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:22,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1167718218, now seen corresponding path program 1 times [2023-02-17 03:16:22,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:22,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801932382] [2023-02-17 03:16:22,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:22,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:22,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:22,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:22,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801932382] [2023-02-17 03:16:22,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801932382] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:22,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:22,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 03:16:22,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235758274] [2023-02-17 03:16:22,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:22,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:16:22,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:22,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:16:22,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:16:22,849 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) [2023-02-17 03:16:22,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:22,856 INFO L93 Difference]: Finished difference Result 458 states and 556 transitions. [2023-02-17 03:16:22,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:16:22,857 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 [2023-02-17 03:16:22,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:22,858 INFO L225 Difference]: With dead ends: 458 [2023-02-17 03:16:22,858 INFO L226 Difference]: Without dead ends: 458 [2023-02-17 03:16:22,858 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 [2023-02-17 03:16:22,859 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 [2023-02-17 03:16:22,859 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] [2023-02-17 03:16:22,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2023-02-17 03:16:22,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 340. [2023-02-17 03:16:22,863 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) [2023-02-17 03:16:22,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 419 transitions. [2023-02-17 03:16:22,863 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 419 transitions. Word has length 44 [2023-02-17 03:16:22,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:22,864 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 419 transitions. [2023-02-17 03:16:22,864 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) [2023-02-17 03:16:22,864 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 419 transitions. [2023-02-17 03:16:22,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-17 03:16:22,867 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:22,867 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] [2023-02-17 03:16:22,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-02-17 03:16:22,868 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:22,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:22,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1519355336, now seen corresponding path program 1 times [2023-02-17 03:16:22,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:22,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521808797] [2023-02-17 03:16:22,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:22,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:22,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:22,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:22,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521808797] [2023-02-17 03:16:22,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521808797] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:22,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:22,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-17 03:16:22,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590053053] [2023-02-17 03:16:22,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:22,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 03:16:22,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:22,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 03:16:22,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-02-17 03:16:22,967 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) [2023-02-17 03:16:23,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:23,210 INFO L93 Difference]: Finished difference Result 370 states and 439 transitions. [2023-02-17 03:16:23,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 03:16:23,210 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 [2023-02-17 03:16:23,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:23,211 INFO L225 Difference]: With dead ends: 370 [2023-02-17 03:16:23,211 INFO L226 Difference]: Without dead ends: 370 [2023-02-17 03:16:23,212 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 [2023-02-17 03:16:23,212 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 [2023-02-17 03:16:23,212 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] [2023-02-17 03:16:23,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-02-17 03:16:23,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 340. [2023-02-17 03:16:23,215 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) [2023-02-17 03:16:23,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 418 transitions. [2023-02-17 03:16:23,216 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 418 transitions. Word has length 44 [2023-02-17 03:16:23,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:23,216 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 418 transitions. [2023-02-17 03:16:23,216 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) [2023-02-17 03:16:23,216 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 418 transitions. [2023-02-17 03:16:23,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-17 03:16:23,216 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:23,216 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] [2023-02-17 03:16:23,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-02-17 03:16:23,216 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:23,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:23,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1190454621, now seen corresponding path program 1 times [2023-02-17 03:16:23,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:23,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858224217] [2023-02-17 03:16:23,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:23,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:23,260 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:23,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:23,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858224217] [2023-02-17 03:16:23,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858224217] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:23,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:23,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 03:16:23,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914992259] [2023-02-17 03:16:23,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:23,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 03:16:23,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:23,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 03:16:23,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 03:16:23,264 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) [2023-02-17 03:16:23,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:23,324 INFO L93 Difference]: Finished difference Result 287 states and 330 transitions. [2023-02-17 03:16:23,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 03:16:23,325 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 [2023-02-17 03:16:23,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:23,325 INFO L225 Difference]: With dead ends: 287 [2023-02-17 03:16:23,326 INFO L226 Difference]: Without dead ends: 287 [2023-02-17 03:16:23,326 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 [2023-02-17 03:16:23,326 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 54 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2023-02-17 03:16:23,326 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] [2023-02-17 03:16:23,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-02-17 03:16:23,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 286. [2023-02-17 03:16:23,329 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) [2023-02-17 03:16:23,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 329 transitions. [2023-02-17 03:16:23,329 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 329 transitions. Word has length 46 [2023-02-17 03:16:23,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:23,330 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 329 transitions. [2023-02-17 03:16:23,330 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) [2023-02-17 03:16:23,330 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 329 transitions. [2023-02-17 03:16:23,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-17 03:16:23,330 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:23,330 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] [2023-02-17 03:16:23,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-02-17 03:16:23,331 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr77ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:23,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:23,331 INFO L85 PathProgramCache]: Analyzing trace with hash 120277254, now seen corresponding path program 1 times [2023-02-17 03:16:23,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:23,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474775341] [2023-02-17 03:16:23,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:23,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 03:16:23,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:23,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474775341] [2023-02-17 03:16:23,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474775341] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:23,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:23,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-02-17 03:16:23,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619909010] [2023-02-17 03:16:23,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:23,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 03:16:23,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:23,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 03:16:23,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-02-17 03:16:23,465 INFO L87 Difference]: Start difference. First operand 286 states and 329 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 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) [2023-02-17 03:16:23,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:23,658 INFO L93 Difference]: Finished difference Result 279 states and 317 transitions. [2023-02-17 03:16:23,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 03:16:23,659 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 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 [2023-02-17 03:16:23,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:23,660 INFO L225 Difference]: With dead ends: 279 [2023-02-17 03:16:23,660 INFO L226 Difference]: Without dead ends: 279 [2023-02-17 03:16:23,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2023-02-17 03:16:23,660 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 471 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:23,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 523 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:16:23,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-02-17 03:16:23,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 263. [2023-02-17 03:16:23,663 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) [2023-02-17 03:16:23,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 304 transitions. [2023-02-17 03:16:23,663 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 304 transitions. Word has length 49 [2023-02-17 03:16:23,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:23,664 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 304 transitions. [2023-02-17 03:16:23,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 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) [2023-02-17 03:16:23,664 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 304 transitions. [2023-02-17 03:16:23,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-17 03:16:23,664 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:23,664 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] [2023-02-17 03:16:23,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-02-17 03:16:23,664 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:23,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:23,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1590511077, now seen corresponding path program 1 times [2023-02-17 03:16:23,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:23,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793643] [2023-02-17 03:16:23,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:23,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:23,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 03:16:23,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:23,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793643] [2023-02-17 03:16:23,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793643] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:16:23,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:16:23,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 03:16:23,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436107089] [2023-02-17 03:16:23,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:16:23,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 03:16:23,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:23,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 03:16:23,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 03:16:23,739 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) [2023-02-17 03:16:23,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:23,795 INFO L93 Difference]: Finished difference Result 277 states and 318 transitions. [2023-02-17 03:16:23,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 03:16:23,796 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 [2023-02-17 03:16:23,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:23,797 INFO L225 Difference]: With dead ends: 277 [2023-02-17 03:16:23,797 INFO L226 Difference]: Without dead ends: 277 [2023-02-17 03:16:23,797 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 [2023-02-17 03:16:23,798 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, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:23,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 474 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 03:16:23,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-02-17 03:16:23,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 266. [2023-02-17 03:16:23,801 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) [2023-02-17 03:16:23,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 306 transitions. [2023-02-17 03:16:23,801 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 306 transitions. Word has length 50 [2023-02-17 03:16:23,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:23,802 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 306 transitions. [2023-02-17 03:16:23,802 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) [2023-02-17 03:16:23,802 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 306 transitions. [2023-02-17 03:16:23,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-17 03:16:23,802 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:23,802 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] [2023-02-17 03:16:23,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-02-17 03:16:23,803 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)] === [2023-02-17 03:16:23,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:23,803 INFO L85 PathProgramCache]: Analyzing trace with hash -97333738, now seen corresponding path program 1 times [2023-02-17 03:16:23,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:23,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428126045] [2023-02-17 03:16:23,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:23,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:23,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:23,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:23,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428126045] [2023-02-17 03:16:23,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428126045] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:16:23,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039922927] [2023-02-17 03:16:23,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:23,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:16:23,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:16:23,965 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) [2023-02-17 03:16:23,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 03:16:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:24,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-17 03:16:24,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:16:24,073 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 [2023-02-17 03:16:24,094 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:24,094 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 [2023-02-17 03:16:24,107 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 [2023-02-17 03:16:24,144 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:24,144 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 [2023-02-17 03:16:24,152 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 [2023-02-17 03:16:24,172 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:24,173 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 [2023-02-17 03:16:24,229 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:24,229 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 [2023-02-17 03:16:24,234 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 03:16:24,234 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 [2023-02-17 03:16:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:24,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:16:24,410 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:24,410 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 [2023-02-17 03:16:24,413 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:24,413 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 [2023-02-17 03:16:24,415 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 [2023-02-17 03:16:24,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:24,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039922927] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:16:24,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:16:24,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-02-17 03:16:24,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155566139] [2023-02-17 03:16:24,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:16:24,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-17 03:16:24,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:24,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-17 03:16:24,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=735, Unknown=5, NotChecked=0, Total=870 [2023-02-17 03:16:24,645 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) [2023-02-17 03:16:25,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:25,535 INFO L93 Difference]: Finished difference Result 479 states and 523 transitions. [2023-02-17 03:16:25,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-17 03:16:25,536 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 [2023-02-17 03:16:25,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:25,537 INFO L225 Difference]: With dead ends: 479 [2023-02-17 03:16:25,537 INFO L226 Difference]: Without dead ends: 479 [2023-02-17 03:16:25,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=283, Invalid=1194, Unknown=5, NotChecked=0, Total=1482 [2023-02-17 03:16:25,538 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 740 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:25,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 1716 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-17 03:16:25,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-02-17 03:16:25,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 312. [2023-02-17 03:16:25,541 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) [2023-02-17 03:16:25,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 363 transitions. [2023-02-17 03:16:25,542 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 363 transitions. Word has length 52 [2023-02-17 03:16:25,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:25,542 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 363 transitions. [2023-02-17 03:16:25,542 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) [2023-02-17 03:16:25,542 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 363 transitions. [2023-02-17 03:16:25,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-17 03:16:25,549 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:25,549 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] [2023-02-17 03:16:25,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-17 03:16:25,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:16:25,755 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:25,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:25,756 INFO L85 PathProgramCache]: Analyzing trace with hash -97333737, now seen corresponding path program 1 times [2023-02-17 03:16:25,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:25,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411297047] [2023-02-17 03:16:25,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:25,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:25,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:25,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411297047] [2023-02-17 03:16:25,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411297047] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:16:25,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901010933] [2023-02-17 03:16:25,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:25,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:16:25,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:16:25,960 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) [2023-02-17 03:16:25,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 03:16:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:26,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-17 03:16:26,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:16:26,070 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 [2023-02-17 03:16:26,088 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:26,088 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 [2023-02-17 03:16:26,091 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 [2023-02-17 03:16:26,103 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 [2023-02-17 03:16:26,105 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 [2023-02-17 03:16:26,149 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:26,150 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 [2023-02-17 03:16:26,153 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 [2023-02-17 03:16:26,155 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:26,156 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 [2023-02-17 03:16:26,158 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 [2023-02-17 03:16:26,182 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:26,182 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 [2023-02-17 03:16:26,184 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 [2023-02-17 03:16:26,232 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:26,233 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 [2023-02-17 03:16:26,236 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 03:16:26,237 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 [2023-02-17 03:16:26,239 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 03:16:26,240 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 [2023-02-17 03:16:26,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:26,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:16:26,558 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:26,559 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 [2023-02-17 03:16:26,563 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:26,564 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 [2023-02-17 03:16:26,568 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:26,568 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 [2023-02-17 03:16:26,572 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:26,573 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 [2023-02-17 03:16:26,576 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 74 treesize of output 70 [2023-02-17 03:16:26,581 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 36 treesize of output 32 [2023-02-17 03:16:26,594 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:26,594 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 [2023-02-17 03:16:26,596 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 03:16:26,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:16:26,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:16:26,599 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 [2023-02-17 03:16:26,637 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:26,638 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 [2023-02-17 03:16:26,754 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:26,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901010933] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:16:26,754 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:16:26,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-02-17 03:16:26,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284276980] [2023-02-17 03:16:26,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:16:26,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-17 03:16:26,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:16:26,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-17 03:16:26,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=891, Unknown=5, NotChecked=0, Total=992 [2023-02-17 03:16:26,757 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) [2023-02-17 03:16:28,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:16:28,146 INFO L93 Difference]: Finished difference Result 460 states and 503 transitions. [2023-02-17 03:16:28,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-17 03:16:28,146 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 [2023-02-17 03:16:28,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:16:28,147 INFO L225 Difference]: With dead ends: 460 [2023-02-17 03:16:28,147 INFO L226 Difference]: Without dead ends: 460 [2023-02-17 03:16:28,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=449, Invalid=2516, Unknown=5, NotChecked=0, Total=2970 [2023-02-17 03:16:28,148 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 1276 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1276 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 1985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-17 03:16:28,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1276 Valid, 1719 Invalid, 1985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-17 03:16:28,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2023-02-17 03:16:28,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 329. [2023-02-17 03:16:28,152 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) [2023-02-17 03:16:28,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 386 transitions. [2023-02-17 03:16:28,152 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 386 transitions. Word has length 52 [2023-02-17 03:16:28,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:16:28,152 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 386 transitions. [2023-02-17 03:16:28,152 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) [2023-02-17 03:16:28,152 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 386 transitions. [2023-02-17 03:16:28,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-02-17 03:16:28,153 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:16:28,153 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] [2023-02-17 03:16:28,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 03:16:28,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:16:28,358 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 75 more)] === [2023-02-17 03:16:28,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:16:28,359 INFO L85 PathProgramCache]: Analyzing trace with hash 2084299753, now seen corresponding path program 1 times [2023-02-17 03:16:28,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:16:28,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182970143] [2023-02-17 03:16:28,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:28,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:16:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:16:28,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:16:28,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182970143] [2023-02-17 03:16:28,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182970143] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:16:28,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873943927] [2023-02-17 03:16:28,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:16:28,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:16:28,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:16:28,762 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) [2023-02-17 03:16:28,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 03:16:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:16:28,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-17 03:16:28,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:16:28,889 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 [2023-02-17 03:16:28,891 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:28,891 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 [2023-02-17 03:16:28,909 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 [2023-02-17 03:16:28,933 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:28,934 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 [2023-02-17 03:16:28,958 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:28,959 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 [2023-02-17 03:16:28,988 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:28,989 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 [2023-02-17 03:16:29,026 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:29,027 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 [2023-02-17 03:16:29,159 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:29,159 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 320 treesize of output 280 [2023-02-17 03:16:29,167 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:29,167 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 180 treesize of output 208 [2023-02-17 03:16:29,249 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 [2023-02-17 03:16:29,362 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:29,363 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 320 treesize of output 280 [2023-02-17 03:16:29,374 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:29,375 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 180 treesize of output 208 [2023-02-17 03:16:29,422 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 [2023-02-17 03:16:29,763 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:16:29,764 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 529 treesize of output 548