./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.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/dll-rb-cnstr_1-1.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 2f8161fc7f730bddeac54a8f174c52e5ef9cd819e9497e3a4087e68b96d46105 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 06:16:10,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 06:16:10,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 06:16:11,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 06:16:11,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 06:16:11,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 06:16:11,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 06:16:11,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 06:16:11,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 06:16:11,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 06:16:11,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 06:16:11,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 06:16:11,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 06:16:11,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 06:16:11,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 06:16:11,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 06:16:11,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 06:16:11,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 06:16:11,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 06:16:11,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 06:16:11,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 06:16:11,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 06:16:11,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 06:16:11,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 06:16:11,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 06:16:11,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 06:16:11,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 06:16:11,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 06:16:11,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 06:16:11,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 06:16:11,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 06:16:11,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 06:16:11,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 06:16:11,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 06:16:11,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 06:16:11,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 06:16:11,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 06:16:11,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 06:16:11,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 06:16:11,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 06:16:11,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 06:16:11,062 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-18 06:16:11,089 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 06:16:11,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 06:16:11,090 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 06:16:11,090 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 06:16:11,091 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 06:16:11,091 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 06:16:11,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 06:16:11,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 06:16:11,092 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 06:16:11,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 06:16:11,093 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 06:16:11,093 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 06:16:11,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 06:16:11,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 06:16:11,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 06:16:11,094 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 06:16:11,094 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 06:16:11,094 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 06:16:11,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 06:16:11,094 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 06:16:11,095 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 06:16:11,095 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 06:16:11,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 06:16:11,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 06:16:11,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 06:16:11,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 06:16:11,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 06:16:11,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 06:16:11,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 06:16:11,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 06:16:11,097 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 06:16:11,097 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 06:16:11,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 06:16:11,098 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 06:16:11,098 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f8161fc7f730bddeac54a8f174c52e5ef9cd819e9497e3a4087e68b96d46105 [2023-02-18 06:16:11,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 06:16:11,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 06:16:11,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 06:16:11,359 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 06:16:11,359 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 06:16:11,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i [2023-02-18 06:16:12,534 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 06:16:12,748 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 06:16:12,749 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i [2023-02-18 06:16:12,758 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00bbd65b7/5e0d2cabdf52489c8431af7ae956aa3e/FLAG8d892e5e5 [2023-02-18 06:16:12,773 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00bbd65b7/5e0d2cabdf52489c8431af7ae956aa3e [2023-02-18 06:16:12,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 06:16:12,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 06:16:12,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 06:16:12,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 06:16:12,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 06:16:12,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 06:16:12" (1/1) ... [2023-02-18 06:16:12,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9cdebdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:16:12, skipping insertion in model container [2023-02-18 06:16:12,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 06:16:12" (1/1) ... [2023-02-18 06:16:12,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 06:16:12,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 06:16:13,010 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/dll-rb-cnstr_1-1.i[22569,22582] [2023-02-18 06:16:13,015 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/dll-rb-cnstr_1-1.i[22645,22658] [2023-02-18 06:16:13,015 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/dll-rb-cnstr_1-1.i[22715,22728] [2023-02-18 06:16:13,016 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/dll-rb-cnstr_1-1.i[22822,22835] [2023-02-18 06:16:13,017 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/dll-rb-cnstr_1-1.i[22894,22907] [2023-02-18 06:16:13,018 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/dll-rb-cnstr_1-1.i[23045,23058] [2023-02-18 06:16:13,019 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/dll-rb-cnstr_1-1.i[23119,23132] [2023-02-18 06:16:13,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 06:16:13,041 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 06:16:13,097 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/dll-rb-cnstr_1-1.i[22569,22582] [2023-02-18 06:16:13,099 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/dll-rb-cnstr_1-1.i[22645,22658] [2023-02-18 06:16:13,103 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/dll-rb-cnstr_1-1.i[22715,22728] [2023-02-18 06:16:13,104 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/dll-rb-cnstr_1-1.i[22822,22835] [2023-02-18 06:16:13,105 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/dll-rb-cnstr_1-1.i[22894,22907] [2023-02-18 06:16:13,107 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/dll-rb-cnstr_1-1.i[23045,23058] [2023-02-18 06:16:13,108 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/dll-rb-cnstr_1-1.i[23119,23132] [2023-02-18 06:16:13,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 06:16:13,145 INFO L208 MainTranslator]: Completed translation [2023-02-18 06:16:13,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:16:13 WrapperNode [2023-02-18 06:16:13,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 06:16:13,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 06:16:13,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 06:16:13,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 06:16:13,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:16:13" (1/1) ... [2023-02-18 06:16:13,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:16:13" (1/1) ... [2023-02-18 06:16:13,201 INFO L138 Inliner]: procedures = 119, calls = 39, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 159 [2023-02-18 06:16:13,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 06:16:13,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 06:16:13,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 06:16:13,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 06:16:13,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:16:13" (1/1) ... [2023-02-18 06:16:13,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:16:13" (1/1) ... [2023-02-18 06:16:13,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:16:13" (1/1) ... [2023-02-18 06:16:13,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:16:13" (1/1) ... [2023-02-18 06:16:13,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:16:13" (1/1) ... [2023-02-18 06:16:13,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:16:13" (1/1) ... [2023-02-18 06:16:13,239 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:16:13" (1/1) ... [2023-02-18 06:16:13,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:16:13" (1/1) ... [2023-02-18 06:16:13,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 06:16:13,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 06:16:13,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 06:16:13,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 06:16:13,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:16:13" (1/1) ... [2023-02-18 06:16:13,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 06:16:13,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:16:13,298 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 06:16:13,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 06:16:13,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-18 06:16:13,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-18 06:16:13,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 06:16:13,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 06:16:13,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-18 06:16:13,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-18 06:16:13,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 06:16:13,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 06:16:13,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 06:16:13,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 06:16:13,448 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 06:16:13,449 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 06:16:13,835 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 06:16:13,841 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 06:16:13,841 INFO L300 CfgBuilder]: Removed 17 assume(true) statements. [2023-02-18 06:16:13,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 06:16:13 BoogieIcfgContainer [2023-02-18 06:16:13,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 06:16:13,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 06:16:13,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 06:16:13,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 06:16:13,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 06:16:12" (1/3) ... [2023-02-18 06:16:13,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e64b82b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 06:16:13, skipping insertion in model container [2023-02-18 06:16:13,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:16:13" (2/3) ... [2023-02-18 06:16:13,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e64b82b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 06:16:13, skipping insertion in model container [2023-02-18 06:16:13,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 06:16:13" (3/3) ... [2023-02-18 06:16:13,855 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-1.i [2023-02-18 06:16:13,869 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 06:16:13,870 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2023-02-18 06:16:13,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 06:16:13,937 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;@791deed1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 06:16:13,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2023-02-18 06:16:13,943 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 84 states have (on average 2.2023809523809526) internal successors, (185), 155 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:13,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-18 06:16:13,950 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:13,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-18 06:16:13,953 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:13,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:13,959 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2023-02-18 06:16:13,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:13,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635830794] [2023-02-18 06:16:13,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:13,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:14,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:14,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:14,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635830794] [2023-02-18 06:16:14,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635830794] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:16:14,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:16:14,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 06:16:14,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284020211] [2023-02-18 06:16:14,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:16:14,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 06:16:14,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:14,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 06:16:14,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 06:16:14,204 INFO L87 Difference]: Start difference. First operand has 156 states, 84 states have (on average 2.2023809523809526) internal successors, (185), 155 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:14,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:14,368 INFO L93 Difference]: Finished difference Result 157 states and 162 transitions. [2023-02-18 06:16:14,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 06:16:14,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-02-18 06:16:14,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:14,378 INFO L225 Difference]: With dead ends: 157 [2023-02-18 06:16:14,379 INFO L226 Difference]: Without dead ends: 153 [2023-02-18 06:16:14,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 06:16:14,383 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 137 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:14,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 95 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:16:14,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-02-18 06:16:14,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2023-02-18 06:16:14,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 85 states have (on average 1.8352941176470587) internal successors, (156), 148 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:14,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 156 transitions. [2023-02-18 06:16:14,418 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 156 transitions. Word has length 3 [2023-02-18 06:16:14,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:14,418 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 156 transitions. [2023-02-18 06:16:14,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:14,419 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 156 transitions. [2023-02-18 06:16:14,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-18 06:16:14,419 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:14,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-18 06:16:14,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 06:16:14,420 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:14,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:14,421 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-02-18 06:16:14,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:14,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17430000] [2023-02-18 06:16:14,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:14,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:14,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:14,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17430000] [2023-02-18 06:16:14,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17430000] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:16:14,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:16:14,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 06:16:14,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836191147] [2023-02-18 06:16:14,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:16:14,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 06:16:14,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:14,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 06:16:14,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 06:16:14,484 INFO L87 Difference]: Start difference. First operand 149 states and 156 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:14,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:14,617 INFO L93 Difference]: Finished difference Result 166 states and 172 transitions. [2023-02-18 06:16:14,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 06:16:14,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-02-18 06:16:14,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:14,626 INFO L225 Difference]: With dead ends: 166 [2023-02-18 06:16:14,626 INFO L226 Difference]: Without dead ends: 166 [2023-02-18 06:16:14,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 06:16:14,629 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 131 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:14,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 100 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:16:14,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-02-18 06:16:14,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 153. [2023-02-18 06:16:14,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 92 states have (on average 1.7391304347826086) internal successors, (160), 152 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:14,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 160 transitions. [2023-02-18 06:16:14,644 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 160 transitions. Word has length 3 [2023-02-18 06:16:14,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:14,645 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 160 transitions. [2023-02-18 06:16:14,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:14,645 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 160 transitions. [2023-02-18 06:16:14,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 06:16:14,664 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:14,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:16:14,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 06:16:14,666 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:14,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:14,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112042, now seen corresponding path program 1 times [2023-02-18 06:16:14,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:14,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543157507] [2023-02-18 06:16:14,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:14,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:14,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:14,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:14,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543157507] [2023-02-18 06:16:14,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543157507] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:16:14,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:16:14,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 06:16:14,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922653366] [2023-02-18 06:16:14,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:16:14,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 06:16:14,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:14,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 06:16:14,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 06:16:14,840 INFO L87 Difference]: Start difference. First operand 153 states and 160 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:15,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:15,031 INFO L93 Difference]: Finished difference Result 154 states and 162 transitions. [2023-02-18 06:16:15,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 06:16:15,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2023-02-18 06:16:15,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:15,033 INFO L225 Difference]: With dead ends: 154 [2023-02-18 06:16:15,033 INFO L226 Difference]: Without dead ends: 154 [2023-02-18 06:16:15,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:16:15,034 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 215 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:15,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 77 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 06:16:15,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-02-18 06:16:15,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 140. [2023-02-18 06:16:15,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 94 states have (on average 1.5851063829787233) internal successors, (149), 139 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:15,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 149 transitions. [2023-02-18 06:16:15,041 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 149 transitions. Word has length 9 [2023-02-18 06:16:15,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:15,041 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 149 transitions. [2023-02-18 06:16:15,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:15,042 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 149 transitions. [2023-02-18 06:16:15,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 06:16:15,042 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:15,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:16:15,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 06:16:15,043 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:15,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:15,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112043, now seen corresponding path program 1 times [2023-02-18 06:16:15,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:15,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574673395] [2023-02-18 06:16:15,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:15,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:15,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:15,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:15,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574673395] [2023-02-18 06:16:15,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574673395] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:16:15,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:16:15,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 06:16:15,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620023024] [2023-02-18 06:16:15,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:16:15,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 06:16:15,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:15,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 06:16:15,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 06:16:15,294 INFO L87 Difference]: Start difference. First operand 140 states and 149 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:15,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:15,563 INFO L93 Difference]: Finished difference Result 179 states and 189 transitions. [2023-02-18 06:16:15,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 06:16:15,564 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2023-02-18 06:16:15,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:15,565 INFO L225 Difference]: With dead ends: 179 [2023-02-18 06:16:15,565 INFO L226 Difference]: Without dead ends: 179 [2023-02-18 06:16:15,565 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 [2023-02-18 06:16:15,566 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 320 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:15,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 140 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 06:16:15,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-02-18 06:16:15,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 150. [2023-02-18 06:16:15,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 105 states have (on average 1.542857142857143) internal successors, (162), 149 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:15,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 162 transitions. [2023-02-18 06:16:15,574 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 162 transitions. Word has length 9 [2023-02-18 06:16:15,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:15,575 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 162 transitions. [2023-02-18 06:16:15,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:15,575 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 162 transitions. [2023-02-18 06:16:15,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-18 06:16:15,576 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:15,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:16:15,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 06:16:15,576 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:15,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:15,577 INFO L85 PathProgramCache]: Analyzing trace with hash 233166301, now seen corresponding path program 1 times [2023-02-18 06:16:15,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:15,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334322439] [2023-02-18 06:16:15,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:15,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:15,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:15,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:15,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334322439] [2023-02-18 06:16:15,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334322439] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:16:15,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:16:15,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 06:16:15,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218454719] [2023-02-18 06:16:15,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:16:15,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 06:16:15,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:15,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 06:16:15,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 06:16:15,617 INFO L87 Difference]: Start difference. First operand 150 states and 162 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:15,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:15,733 INFO L93 Difference]: Finished difference Result 164 states and 172 transitions. [2023-02-18 06:16:15,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 06:16:15,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-18 06:16:15,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:15,734 INFO L225 Difference]: With dead ends: 164 [2023-02-18 06:16:15,734 INFO L226 Difference]: Without dead ends: 164 [2023-02-18 06:16:15,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:16:15,742 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 150 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:15,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 175 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:16:15,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-02-18 06:16:15,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 148. [2023-02-18 06:16:15,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 104 states have (on average 1.5192307692307692) internal successors, (158), 147 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:15,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 158 transitions. [2023-02-18 06:16:15,749 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 158 transitions. Word has length 11 [2023-02-18 06:16:15,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:15,749 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 158 transitions. [2023-02-18 06:16:15,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:15,750 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 158 transitions. [2023-02-18 06:16:15,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 06:16:15,750 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:15,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:16:15,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-18 06:16:15,751 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:15,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:15,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413642, now seen corresponding path program 1 times [2023-02-18 06:16:15,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:15,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136411206] [2023-02-18 06:16:15,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:15,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:15,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:15,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:15,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136411206] [2023-02-18 06:16:15,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136411206] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:16:15,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:16:15,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 06:16:15,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771542142] [2023-02-18 06:16:15,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:16:15,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 06:16:15,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:15,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 06:16:15,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:16:15,908 INFO L87 Difference]: Start difference. First operand 148 states and 158 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:16,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:16,052 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2023-02-18 06:16:16,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 06:16:16,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2023-02-18 06:16:16,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:16,053 INFO L225 Difference]: With dead ends: 147 [2023-02-18 06:16:16,053 INFO L226 Difference]: Without dead ends: 147 [2023-02-18 06:16:16,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 06:16:16,054 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 7 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:16,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 323 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:16:16,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-02-18 06:16:16,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2023-02-18 06:16:16,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 104 states have (on average 1.5) internal successors, (156), 146 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:16,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 156 transitions. [2023-02-18 06:16:16,074 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 156 transitions. Word has length 12 [2023-02-18 06:16:16,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:16,074 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 156 transitions. [2023-02-18 06:16:16,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:16,075 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 156 transitions. [2023-02-18 06:16:16,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 06:16:16,075 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:16,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:16:16,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-18 06:16:16,077 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:16,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:16,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413643, now seen corresponding path program 1 times [2023-02-18 06:16:16,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:16,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194703380] [2023-02-18 06:16:16,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:16,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:16,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:16,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:16,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194703380] [2023-02-18 06:16:16,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194703380] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:16:16,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:16:16,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 06:16:16,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702713986] [2023-02-18 06:16:16,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:16:16,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 06:16:16,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:16,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 06:16:16,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:16:16,191 INFO L87 Difference]: Start difference. First operand 147 states and 156 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:16,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:16,303 INFO L93 Difference]: Finished difference Result 146 states and 154 transitions. [2023-02-18 06:16:16,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 06:16:16,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2023-02-18 06:16:16,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:16,304 INFO L225 Difference]: With dead ends: 146 [2023-02-18 06:16:16,304 INFO L226 Difference]: Without dead ends: 146 [2023-02-18 06:16:16,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 06:16:16,305 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 8 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:16,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 338 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:16:16,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-02-18 06:16:16,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2023-02-18 06:16:16,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 104 states have (on average 1.4807692307692308) internal successors, (154), 145 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:16,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2023-02-18 06:16:16,309 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 12 [2023-02-18 06:16:16,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:16,310 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2023-02-18 06:16:16,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:16,310 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2023-02-18 06:16:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-18 06:16:16,311 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:16,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:16:16,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-18 06:16:16,311 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:16,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:16,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1299214142, now seen corresponding path program 1 times [2023-02-18 06:16:16,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:16,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680369841] [2023-02-18 06:16:16,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:16,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:16,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:16,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:16,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680369841] [2023-02-18 06:16:16,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680369841] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:16:16,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:16:16,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 06:16:16,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397271977] [2023-02-18 06:16:16,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:16:16,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 06:16:16,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:16,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 06:16:16,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-18 06:16:16,470 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:16,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:16,629 INFO L93 Difference]: Finished difference Result 200 states and 212 transitions. [2023-02-18 06:16:16,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 06:16:16,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-18 06:16:16,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:16,633 INFO L225 Difference]: With dead ends: 200 [2023-02-18 06:16:16,633 INFO L226 Difference]: Without dead ends: 200 [2023-02-18 06:16:16,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-02-18 06:16:16,638 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 200 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:16,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 294 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:16:16,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-02-18 06:16:16,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 151. [2023-02-18 06:16:16,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 109 states have (on average 1.4587155963302751) internal successors, (159), 150 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:16,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 159 transitions. [2023-02-18 06:16:16,642 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 159 transitions. Word has length 14 [2023-02-18 06:16:16,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:16,642 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 159 transitions. [2023-02-18 06:16:16,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:16,643 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 159 transitions. [2023-02-18 06:16:16,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 06:16:16,644 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:16,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:16:16,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-18 06:16:16,644 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:16,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:16,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362871, now seen corresponding path program 1 times [2023-02-18 06:16:16,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:16,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412635504] [2023-02-18 06:16:16,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:16,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:16,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:16,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:16,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412635504] [2023-02-18 06:16:16,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412635504] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:16:16,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:16:16,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-18 06:16:16,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991573876] [2023-02-18 06:16:16,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:16:16,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 06:16:16,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:16,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 06:16:16,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-18 06:16:16,858 INFO L87 Difference]: Start difference. First operand 151 states and 159 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:17,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:17,071 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2023-02-18 06:16:17,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 06:16:17,071 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2023-02-18 06:16:17,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:17,072 INFO L225 Difference]: With dead ends: 150 [2023-02-18 06:16:17,072 INFO L226 Difference]: Without dead ends: 150 [2023-02-18 06:16:17,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-02-18 06:16:17,073 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 189 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:17,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 221 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 06:16:17,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-02-18 06:16:17,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2023-02-18 06:16:17,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 109 states have (on average 1.4495412844036697) internal successors, (158), 149 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:17,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 158 transitions. [2023-02-18 06:16:17,076 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 158 transitions. Word has length 16 [2023-02-18 06:16:17,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:17,076 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 158 transitions. [2023-02-18 06:16:17,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:17,077 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 158 transitions. [2023-02-18 06:16:17,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 06:16:17,077 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:17,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:16:17,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-18 06:16:17,077 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:17,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:17,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362872, now seen corresponding path program 1 times [2023-02-18 06:16:17,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:17,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279136569] [2023-02-18 06:16:17,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:17,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:17,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:17,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:17,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279136569] [2023-02-18 06:16:17,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279136569] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:16:17,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:16:17,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-18 06:16:17,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810546705] [2023-02-18 06:16:17,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:16:17,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 06:16:17,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:17,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 06:16:17,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-02-18 06:16:17,321 INFO L87 Difference]: Start difference. First operand 150 states and 158 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:17,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:17,716 INFO L93 Difference]: Finished difference Result 168 states and 177 transitions. [2023-02-18 06:16:17,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-18 06:16:17,717 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2023-02-18 06:16:17,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:17,718 INFO L225 Difference]: With dead ends: 168 [2023-02-18 06:16:17,718 INFO L226 Difference]: Without dead ends: 168 [2023-02-18 06:16:17,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2023-02-18 06:16:17,719 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 237 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:17,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 355 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 06:16:17,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-02-18 06:16:17,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 154. [2023-02-18 06:16:17,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 119 states have (on average 1.3949579831932772) internal successors, (166), 153 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:17,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 166 transitions. [2023-02-18 06:16:17,722 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 166 transitions. Word has length 16 [2023-02-18 06:16:17,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:17,722 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 166 transitions. [2023-02-18 06:16:17,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:17,723 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 166 transitions. [2023-02-18 06:16:17,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-18 06:16:17,723 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:17,723 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] [2023-02-18 06:16:17,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-18 06:16:17,724 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:17,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:17,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1997554901, now seen corresponding path program 1 times [2023-02-18 06:16:17,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:17,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493642290] [2023-02-18 06:16:17,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:17,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:17,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:17,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:17,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:17,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493642290] [2023-02-18 06:16:17,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493642290] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 06:16:17,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933395139] [2023-02-18 06:16:17,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:17,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:16:17,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:16:17,892 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 06:16:17,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 06:16:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:18,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-18 06:16:18,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 06:16:18,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 06:16:18,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 06:16:18,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 06:16:18,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-18 06:16:18,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 06:16:18,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-18 06:16:18,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 06:16:18,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-18 06:16:18,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 06:16:18,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-18 06:16:18,192 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 06:16:18,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-18 06:16:18,196 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 06:16:18,196 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:18,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2023-02-18 06:16:18,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:18,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 06:16:18,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-18 06:16:18,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-02-18 06:16:18,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-18 06:16:18,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 06:16:18,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:18,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933395139] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 06:16:18,420 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 06:16:18,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2023-02-18 06:16:18,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388638645] [2023-02-18 06:16:18,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 06:16:18,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 06:16:18,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:18,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 06:16:18,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-02-18 06:16:18,422 INFO L87 Difference]: Start difference. First operand 154 states and 166 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:18,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:18,731 INFO L93 Difference]: Finished difference Result 205 states and 221 transitions. [2023-02-18 06:16:18,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 06:16:18,732 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-18 06:16:18,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:18,733 INFO L225 Difference]: With dead ends: 205 [2023-02-18 06:16:18,733 INFO L226 Difference]: Without dead ends: 205 [2023-02-18 06:16:18,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2023-02-18 06:16:18,733 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 345 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:18,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 503 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 06:16:18,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-02-18 06:16:18,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 161. [2023-02-18 06:16:18,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 126 states have (on average 1.380952380952381) internal successors, (174), 160 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:18,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 174 transitions. [2023-02-18 06:16:18,737 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 174 transitions. Word has length 21 [2023-02-18 06:16:18,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:18,737 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 174 transitions. [2023-02-18 06:16:18,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:18,737 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 174 transitions. [2023-02-18 06:16:18,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-18 06:16:18,738 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:18,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:16:18,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-18 06:16:18,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-18 06:16:18,945 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:18,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:18,946 INFO L85 PathProgramCache]: Analyzing trace with hash -2039573154, now seen corresponding path program 1 times [2023-02-18 06:16:18,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:18,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076060664] [2023-02-18 06:16:18,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:18,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:19,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:19,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076060664] [2023-02-18 06:16:19,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076060664] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:16:19,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:16:19,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 06:16:19,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186376587] [2023-02-18 06:16:19,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:16:19,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 06:16:19,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:19,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 06:16:19,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:16:19,012 INFO L87 Difference]: Start difference. First operand 161 states and 174 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:19,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:19,144 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2023-02-18 06:16:19,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 06:16:19,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-18 06:16:19,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:19,146 INFO L225 Difference]: With dead ends: 165 [2023-02-18 06:16:19,146 INFO L226 Difference]: Without dead ends: 165 [2023-02-18 06:16:19,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 06:16:19,147 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 26 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:19,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 303 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:16:19,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-02-18 06:16:19,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 160. [2023-02-18 06:16:19,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 125 states have (on average 1.368) internal successors, (171), 159 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:19,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2023-02-18 06:16:19,151 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 21 [2023-02-18 06:16:19,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:19,151 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2023-02-18 06:16:19,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:19,151 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2023-02-18 06:16:19,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-18 06:16:19,152 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:19,152 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] [2023-02-18 06:16:19,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-18 06:16:19,153 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:19,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:19,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1819127547, now seen corresponding path program 1 times [2023-02-18 06:16:19,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:19,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029606142] [2023-02-18 06:16:19,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:19,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:19,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:19,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:19,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029606142] [2023-02-18 06:16:19,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029606142] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:16:19,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:16:19,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 06:16:19,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457977519] [2023-02-18 06:16:19,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:16:19,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 06:16:19,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:19,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 06:16:19,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 06:16:19,215 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:19,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:19,294 INFO L93 Difference]: Finished difference Result 162 states and 172 transitions. [2023-02-18 06:16:19,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 06:16:19,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-02-18 06:16:19,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:19,295 INFO L225 Difference]: With dead ends: 162 [2023-02-18 06:16:19,295 INFO L226 Difference]: Without dead ends: 162 [2023-02-18 06:16:19,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:16:19,296 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 21 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:19,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 268 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:16:19,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-02-18 06:16:19,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 158. [2023-02-18 06:16:19,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 124 states have (on average 1.3548387096774193) internal successors, (168), 157 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:19,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 168 transitions. [2023-02-18 06:16:19,300 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 168 transitions. Word has length 22 [2023-02-18 06:16:19,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:19,300 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 168 transitions. [2023-02-18 06:16:19,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:19,300 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 168 transitions. [2023-02-18 06:16:19,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-18 06:16:19,301 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:19,301 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] [2023-02-18 06:16:19,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-18 06:16:19,302 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:19,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:19,302 INFO L85 PathProgramCache]: Analyzing trace with hash 391604008, now seen corresponding path program 1 times [2023-02-18 06:16:19,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:19,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107808986] [2023-02-18 06:16:19,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:19,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:19,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:19,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107808986] [2023-02-18 06:16:19,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107808986] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:16:19,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:16:19,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 06:16:19,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377998581] [2023-02-18 06:16:19,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:16:19,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 06:16:19,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:19,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 06:16:19,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:16:19,387 INFO L87 Difference]: Start difference. First operand 158 states and 168 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:19,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:19,491 INFO L93 Difference]: Finished difference Result 157 states and 167 transitions. [2023-02-18 06:16:19,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 06:16:19,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-02-18 06:16:19,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:19,493 INFO L225 Difference]: With dead ends: 157 [2023-02-18 06:16:19,493 INFO L226 Difference]: Without dead ends: 157 [2023-02-18 06:16:19,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 06:16:19,494 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 7 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:19,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 313 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:16:19,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-02-18 06:16:19,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-02-18 06:16:19,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 124 states have (on average 1.346774193548387) internal successors, (167), 156 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:19,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions. [2023-02-18 06:16:19,497 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 24 [2023-02-18 06:16:19,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:19,498 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 167 transitions. [2023-02-18 06:16:19,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:19,498 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 167 transitions. [2023-02-18 06:16:19,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-18 06:16:19,500 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:19,500 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] [2023-02-18 06:16:19,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-18 06:16:19,500 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:19,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:19,501 INFO L85 PathProgramCache]: Analyzing trace with hash 391604009, now seen corresponding path program 1 times [2023-02-18 06:16:19,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:19,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494122079] [2023-02-18 06:16:19,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:19,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:19,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:19,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:19,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494122079] [2023-02-18 06:16:19,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494122079] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:16:19,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:16:19,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 06:16:19,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447776262] [2023-02-18 06:16:19,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:16:19,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 06:16:19,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:19,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 06:16:19,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:16:19,679 INFO L87 Difference]: Start difference. First operand 157 states and 167 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:19,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:19,786 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2023-02-18 06:16:19,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 06:16:19,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-02-18 06:16:19,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:19,787 INFO L225 Difference]: With dead ends: 156 [2023-02-18 06:16:19,787 INFO L226 Difference]: Without dead ends: 156 [2023-02-18 06:16:19,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 06:16:19,789 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 3 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:19,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 303 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:16:19,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-02-18 06:16:19,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2023-02-18 06:16:19,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 124 states have (on average 1.3387096774193548) internal successors, (166), 155 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:19,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 166 transitions. [2023-02-18 06:16:19,793 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 166 transitions. Word has length 24 [2023-02-18 06:16:19,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:19,793 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 166 transitions. [2023-02-18 06:16:19,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:19,793 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 166 transitions. [2023-02-18 06:16:19,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 06:16:19,795 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:19,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:16:19,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-18 06:16:19,796 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:19,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:19,797 INFO L85 PathProgramCache]: Analyzing trace with hash -264588155, now seen corresponding path program 1 times [2023-02-18 06:16:19,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:19,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244334576] [2023-02-18 06:16:19,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:19,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:19,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:19,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244334576] [2023-02-18 06:16:19,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244334576] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:16:19,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:16:19,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 06:16:19,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814371511] [2023-02-18 06:16:19,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:16:19,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 06:16:19,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:19,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 06:16:19,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 06:16:19,957 INFO L87 Difference]: Start difference. First operand 156 states and 166 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:20,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:20,027 INFO L93 Difference]: Finished difference Result 155 states and 164 transitions. [2023-02-18 06:16:20,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 06:16:20,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-18 06:16:20,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:20,028 INFO L225 Difference]: With dead ends: 155 [2023-02-18 06:16:20,028 INFO L226 Difference]: Without dead ends: 155 [2023-02-18 06:16:20,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:16:20,029 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 16 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:20,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 255 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:16:20,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-02-18 06:16:20,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2023-02-18 06:16:20,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 123 states have (on average 1.3252032520325203) internal successors, (163), 153 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:20,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 163 transitions. [2023-02-18 06:16:20,033 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 163 transitions. Word has length 25 [2023-02-18 06:16:20,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:20,034 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 163 transitions. [2023-02-18 06:16:20,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:20,034 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 163 transitions. [2023-02-18 06:16:20,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-18 06:16:20,035 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:20,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:16:20,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-18 06:16:20,037 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr68ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:20,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:20,038 INFO L85 PathProgramCache]: Analyzing trace with hash 201988172, now seen corresponding path program 1 times [2023-02-18 06:16:20,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:20,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856161496] [2023-02-18 06:16:20,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:20,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:20,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 06:16:20,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:20,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856161496] [2023-02-18 06:16:20,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856161496] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:16:20,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:16:20,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 06:16:20,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025681548] [2023-02-18 06:16:20,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:16:20,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 06:16:20,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:20,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 06:16:20,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 06:16:20,068 INFO L87 Difference]: Start difference. First operand 154 states and 163 transitions. Second operand has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:20,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:20,095 INFO L93 Difference]: Finished difference Result 156 states and 165 transitions. [2023-02-18 06:16:20,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 06:16:20,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-18 06:16:20,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:20,097 INFO L225 Difference]: With dead ends: 156 [2023-02-18 06:16:20,097 INFO L226 Difference]: Without dead ends: 156 [2023-02-18 06:16:20,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 06:16:20,098 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 72 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:20,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 114 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 06:16:20,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-02-18 06:16:20,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2023-02-18 06:16:20,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 125 states have (on average 1.32) internal successors, (165), 155 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:20,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 165 transitions. [2023-02-18 06:16:20,102 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 165 transitions. Word has length 27 [2023-02-18 06:16:20,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:20,103 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 165 transitions. [2023-02-18 06:16:20,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:20,103 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 165 transitions. [2023-02-18 06:16:20,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-18 06:16:20,103 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:20,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:16:20,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-18 06:16:20,104 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:20,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:20,104 INFO L85 PathProgramCache]: Analyzing trace with hash -866016759, now seen corresponding path program 1 times [2023-02-18 06:16:20,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:20,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555187634] [2023-02-18 06:16:20,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:20,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:20,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:20,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:20,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555187634] [2023-02-18 06:16:20,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555187634] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:16:20,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:16:20,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 06:16:20,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725275377] [2023-02-18 06:16:20,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:16:20,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 06:16:20,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:20,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 06:16:20,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-02-18 06:16:20,194 INFO L87 Difference]: Start difference. First operand 156 states and 165 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:20,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:20,304 INFO L93 Difference]: Finished difference Result 169 states and 178 transitions. [2023-02-18 06:16:20,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 06:16:20,305 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-18 06:16:20,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:20,306 INFO L225 Difference]: With dead ends: 169 [2023-02-18 06:16:20,306 INFO L226 Difference]: Without dead ends: 169 [2023-02-18 06:16:20,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-02-18 06:16:20,307 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 245 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:20,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 172 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:16:20,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-02-18 06:16:20,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 154. [2023-02-18 06:16:20,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 124 states have (on average 1.3064516129032258) internal successors, (162), 153 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:20,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 162 transitions. [2023-02-18 06:16:20,310 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 162 transitions. Word has length 27 [2023-02-18 06:16:20,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:20,310 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 162 transitions. [2023-02-18 06:16:20,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:20,310 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 162 transitions. [2023-02-18 06:16:20,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 06:16:20,311 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:20,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:16:20,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-18 06:16:20,311 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:20,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:20,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1099927530, now seen corresponding path program 1 times [2023-02-18 06:16:20,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:20,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189014768] [2023-02-18 06:16:20,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:20,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:20,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:20,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:20,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189014768] [2023-02-18 06:16:20,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189014768] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:16:20,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:16:20,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 06:16:20,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88212829] [2023-02-18 06:16:20,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:16:20,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 06:16:20,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:20,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 06:16:20,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-18 06:16:20,480 INFO L87 Difference]: Start difference. First operand 154 states and 162 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:20,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:20,694 INFO L93 Difference]: Finished difference Result 154 states and 162 transitions. [2023-02-18 06:16:20,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 06:16:20,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-18 06:16:20,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:20,695 INFO L225 Difference]: With dead ends: 154 [2023-02-18 06:16:20,695 INFO L226 Difference]: Without dead ends: 154 [2023-02-18 06:16:20,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-02-18 06:16:20,696 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 57 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:20,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 348 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 06:16:20,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-02-18 06:16:20,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2023-02-18 06:16:20,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 124 states have (on average 1.2983870967741935) internal successors, (161), 152 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:20,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 161 transitions. [2023-02-18 06:16:20,699 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 161 transitions. Word has length 28 [2023-02-18 06:16:20,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:20,699 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 161 transitions. [2023-02-18 06:16:20,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:20,699 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 161 transitions. [2023-02-18 06:16:20,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 06:16:20,700 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:20,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:16:20,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-02-18 06:16:20,700 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:20,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:20,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1099927531, now seen corresponding path program 1 times [2023-02-18 06:16:20,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:20,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902201821] [2023-02-18 06:16:20,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:20,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:20,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:20,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:20,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902201821] [2023-02-18 06:16:20,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902201821] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:16:20,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:16:20,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-18 06:16:20,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574576772] [2023-02-18 06:16:20,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:16:20,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 06:16:20,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:20,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 06:16:20,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-18 06:16:20,961 INFO L87 Difference]: Start difference. First operand 153 states and 161 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:21,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:21,249 INFO L93 Difference]: Finished difference Result 149 states and 157 transitions. [2023-02-18 06:16:21,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 06:16:21,249 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-18 06:16:21,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:21,250 INFO L225 Difference]: With dead ends: 149 [2023-02-18 06:16:21,250 INFO L226 Difference]: Without dead ends: 149 [2023-02-18 06:16:21,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-02-18 06:16:21,252 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 67 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:21,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 453 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 06:16:21,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-02-18 06:16:21,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 130. [2023-02-18 06:16:21,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 108 states have (on average 1.2685185185185186) internal successors, (137), 129 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:21,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 137 transitions. [2023-02-18 06:16:21,261 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 137 transitions. Word has length 28 [2023-02-18 06:16:21,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:21,261 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 137 transitions. [2023-02-18 06:16:21,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:21,262 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 137 transitions. [2023-02-18 06:16:21,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-18 06:16:21,263 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:21,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:16:21,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-02-18 06:16:21,264 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:21,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:21,264 INFO L85 PathProgramCache]: Analyzing trace with hash 2136034553, now seen corresponding path program 1 times [2023-02-18 06:16:21,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:21,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537074784] [2023-02-18 06:16:21,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:21,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:21,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:21,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:21,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537074784] [2023-02-18 06:16:21,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537074784] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 06:16:21,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133540381] [2023-02-18 06:16:21,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:21,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:16:21,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:16:21,349 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 06:16:21,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 06:16:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:21,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-18 06:16:21,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 06:16:21,466 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 13 treesize of output 9 [2023-02-18 06:16:21,472 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 19 treesize of output 7 [2023-02-18 06:16:21,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 06:16:21,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 06:16:21,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133540381] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:16:21,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 06:16:21,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2023-02-18 06:16:21,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249491894] [2023-02-18 06:16:21,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:16:21,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 06:16:21,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:21,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 06:16:21,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-18 06:16:21,479 INFO L87 Difference]: Start difference. First operand 130 states and 137 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:21,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:21,544 INFO L93 Difference]: Finished difference Result 139 states and 146 transitions. [2023-02-18 06:16:21,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 06:16:21,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-02-18 06:16:21,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:21,546 INFO L225 Difference]: With dead ends: 139 [2023-02-18 06:16:21,546 INFO L226 Difference]: Without dead ends: 139 [2023-02-18 06:16:21,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-02-18 06:16:21,546 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 7 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:21,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 238 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:16:21,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-02-18 06:16:21,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 133. [2023-02-18 06:16:21,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 111 states have (on average 1.2612612612612613) internal successors, (140), 132 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:21,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 140 transitions. [2023-02-18 06:16:21,550 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 140 transitions. Word has length 29 [2023-02-18 06:16:21,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:21,550 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 140 transitions. [2023-02-18 06:16:21,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:21,550 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 140 transitions. [2023-02-18 06:16:21,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 06:16:21,551 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:21,551 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] [2023-02-18 06:16:21,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 06:16:21,761 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,SelfDestructingSolverStorable20 [2023-02-18 06:16:21,761 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:21,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:21,762 INFO L85 PathProgramCache]: Analyzing trace with hash 180762931, now seen corresponding path program 1 times [2023-02-18 06:16:21,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:21,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865539339] [2023-02-18 06:16:21,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:21,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:21,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:21,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865539339] [2023-02-18 06:16:21,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865539339] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 06:16:21,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020406314] [2023-02-18 06:16:21,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:21,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:16:21,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:16:21,881 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 06:16:21,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 06:16:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:21,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-18 06:16:21,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 06:16:21,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 06:16:21,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 06:16:21,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-18 06:16:21,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-18 06:16:22,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-18 06:16:22,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-18 06:16:22,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-18 06:16:22,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-18 06:16:22,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 06:16:22,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 06:16:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 06:16:22,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020406314] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 06:16:22,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 06:16:22,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 9 [2023-02-18 06:16:22,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260575965] [2023-02-18 06:16:22,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 06:16:22,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 06:16:22,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:22,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 06:16:22,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-02-18 06:16:22,044 INFO L87 Difference]: Start difference. First operand 133 states and 140 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:22,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:22,362 INFO L93 Difference]: Finished difference Result 181 states and 191 transitions. [2023-02-18 06:16:22,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 06:16:22,365 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 30 [2023-02-18 06:16:22,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:22,365 INFO L225 Difference]: With dead ends: 181 [2023-02-18 06:16:22,366 INFO L226 Difference]: Without dead ends: 181 [2023-02-18 06:16:22,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-02-18 06:16:22,366 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 80 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:22,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 468 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 06:16:22,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-02-18 06:16:22,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 144. [2023-02-18 06:16:22,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 122 states have (on average 1.2540983606557377) internal successors, (153), 143 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:22,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 153 transitions. [2023-02-18 06:16:22,369 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 153 transitions. Word has length 30 [2023-02-18 06:16:22,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:22,370 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 153 transitions. [2023-02-18 06:16:22,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:22,370 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 153 transitions. [2023-02-18 06:16:22,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-18 06:16:22,370 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:22,370 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] [2023-02-18 06:16:22,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 06:16:22,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:16:22,571 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr70ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:22,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:22,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1308683207, now seen corresponding path program 1 times [2023-02-18 06:16:22,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:22,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695216015] [2023-02-18 06:16:22,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:22,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:22,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 06:16:22,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:22,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695216015] [2023-02-18 06:16:22,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695216015] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 06:16:22,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104842586] [2023-02-18 06:16:22,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:22,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:16:22,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:16:22,686 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 06:16:22,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 06:16:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:22,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 06:16:22,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 06:16:22,800 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 [2023-02-18 06:16:22,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 06:16:22,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 06:16:22,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 06:16:22,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104842586] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 06:16:22,810 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 06:16:22,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-02-18 06:16:22,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963060670] [2023-02-18 06:16:22,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 06:16:22,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 06:16:22,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:22,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 06:16:22,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:16:22,812 INFO L87 Difference]: Start difference. First operand 144 states and 153 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:22,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:22,932 INFO L93 Difference]: Finished difference Result 152 states and 160 transitions. [2023-02-18 06:16:22,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 06:16:22,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 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 31 [2023-02-18 06:16:22,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:22,933 INFO L225 Difference]: With dead ends: 152 [2023-02-18 06:16:22,933 INFO L226 Difference]: Without dead ends: 129 [2023-02-18 06:16:22,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:16:22,934 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 0 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:22,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 273 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:16:22,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-02-18 06:16:22,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-02-18 06:16:22,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 107 states have (on average 1.280373831775701) internal successors, (137), 128 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:22,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 137 transitions. [2023-02-18 06:16:22,937 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 137 transitions. Word has length 31 [2023-02-18 06:16:22,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:22,937 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 137 transitions. [2023-02-18 06:16:22,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:22,937 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 137 transitions. [2023-02-18 06:16:22,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-18 06:16:22,937 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:22,937 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] [2023-02-18 06:16:22,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 06:16:23,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:16:23,144 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:23,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:23,145 INFO L85 PathProgramCache]: Analyzing trace with hash 929038273, now seen corresponding path program 1 times [2023-02-18 06:16:23,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:23,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348040733] [2023-02-18 06:16:23,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:23,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:23,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:23,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:23,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348040733] [2023-02-18 06:16:23,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348040733] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 06:16:23,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043546377] [2023-02-18 06:16:23,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:23,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:16:23,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:16:23,495 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 06:16:23,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 06:16:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:23,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-18 06:16:23,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 06:16:23,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 06:16:23,615 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 13 treesize of output 9 [2023-02-18 06:16:23,629 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:23,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-18 06:16:23,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 06:16:23,646 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 45 treesize of output 44 [2023-02-18 06:16:23,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 06:16:23,680 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:23,681 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 29 treesize of output 44 [2023-02-18 06:16:23,687 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 42 treesize of output 44 [2023-02-18 06:16:23,704 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 16 treesize of output 8 [2023-02-18 06:16:23,721 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 20 treesize of output 22 [2023-02-18 06:16:23,726 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 20 treesize of output 22 [2023-02-18 06:16:23,744 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 28 treesize of output 16 [2023-02-18 06:16:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:23,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 06:16:23,773 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_915 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_915) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)) ~unnamed1~0~BLACK)) is different from false [2023-02-18 06:16:23,806 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_915 (Array Int Int))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_915) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)) ~unnamed1~0~BLACK)) is different from false [2023-02-18 06:16:23,811 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_913 (Array Int Int)) (v_ArrVal_912 (Array Int Int)) (v_ArrVal_915 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_913) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_912) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_915) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)) ~unnamed1~0~BLACK)) is different from false [2023-02-18 06:16:23,838 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:23,838 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 38 treesize of output 39 [2023-02-18 06:16:23,841 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 70 treesize of output 62 [2023-02-18 06:16:23,845 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 29 treesize of output 27 [2023-02-18 06:16:24,094 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 06:16:24,095 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:24,095 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 46 [2023-02-18 06:16:24,100 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 95 treesize of output 77 [2023-02-18 06:16:24,103 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 12 treesize of output 8 [2023-02-18 06:16:24,106 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 11 [2023-02-18 06:16:24,109 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-18 06:16:24,113 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 06:16:24,113 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:24,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 31 [2023-02-18 06:16:24,117 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 06:16:24,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:24,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043546377] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 06:16:24,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 06:16:24,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 25 [2023-02-18 06:16:24,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649497172] [2023-02-18 06:16:24,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 06:16:24,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-18 06:16:24,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:24,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-18 06:16:24,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=370, Unknown=14, NotChecked=126, Total=600 [2023-02-18 06:16:24,142 INFO L87 Difference]: Start difference. First operand 129 states and 137 transitions. Second operand has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:25,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:25,772 INFO L93 Difference]: Finished difference Result 224 states and 239 transitions. [2023-02-18 06:16:25,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-18 06:16:25,772 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 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 35 [2023-02-18 06:16:25,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:25,774 INFO L225 Difference]: With dead ends: 224 [2023-02-18 06:16:25,774 INFO L226 Difference]: Without dead ends: 224 [2023-02-18 06:16:25,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 54 SyntacticMatches, 10 SemanticMatches, 41 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=388, Invalid=1167, Unknown=17, NotChecked=234, Total=1806 [2023-02-18 06:16:25,776 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 503 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 54 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 418 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:25,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 563 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 965 Invalid, 8 Unknown, 418 Unchecked, 1.1s Time] [2023-02-18 06:16:25,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-02-18 06:16:25,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 155. [2023-02-18 06:16:25,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 133 states have (on average 1.2406015037593985) internal successors, (165), 154 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:25,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 165 transitions. [2023-02-18 06:16:25,781 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 165 transitions. Word has length 35 [2023-02-18 06:16:25,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:25,781 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 165 transitions. [2023-02-18 06:16:25,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:25,781 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 165 transitions. [2023-02-18 06:16:25,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-18 06:16:25,782 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:25,782 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] [2023-02-18 06:16:25,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 06:16:25,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-02-18 06:16:25,989 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:25,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:25,989 INFO L85 PathProgramCache]: Analyzing trace with hash 899162440, now seen corresponding path program 1 times [2023-02-18 06:16:25,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:25,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125437061] [2023-02-18 06:16:25,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:25,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:26,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:26,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125437061] [2023-02-18 06:16:26,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125437061] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 06:16:26,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802689835] [2023-02-18 06:16:26,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:26,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:16:26,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:16:26,251 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 06:16:26,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 06:16:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:26,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 36 conjunts are in the unsatisfiable core [2023-02-18 06:16:26,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 06:16:26,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 06:16:26,425 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:26,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2023-02-18 06:16:26,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 06:16:26,479 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:26,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 66 [2023-02-18 06:16:26,482 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 58 treesize of output 44 [2023-02-18 06:16:26,537 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:26,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 66 [2023-02-18 06:16:26,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 32 [2023-02-18 06:16:26,566 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:26,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 66 [2023-02-18 06:16:26,634 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:26,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 65 [2023-02-18 06:16:26,639 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 06:16:26,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 32 [2023-02-18 06:16:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:26,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 06:16:26,976 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:26,976 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 38 treesize of output 31 [2023-02-18 06:16:26,979 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:26,980 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 252 treesize of output 227 [2023-02-18 06:16:26,985 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:26,985 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 212 treesize of output 204 [2023-02-18 06:16:26,989 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 196 treesize of output 188 [2023-02-18 06:16:33,736 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:33,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802689835] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 06:16:33,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 06:16:33,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 33 [2023-02-18 06:16:33,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671594129] [2023-02-18 06:16:33,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 06:16:33,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-02-18 06:16:33,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:16:33,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-02-18 06:16:33,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=937, Unknown=23, NotChecked=0, Total=1122 [2023-02-18 06:16:33,740 INFO L87 Difference]: Start difference. First operand 155 states and 165 transitions. Second operand has 34 states, 33 states have (on average 3.6666666666666665) internal successors, (121), 34 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:36,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:16:36,225 INFO L93 Difference]: Finished difference Result 301 states and 321 transitions. [2023-02-18 06:16:36,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-18 06:16:36,226 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.6666666666666665) internal successors, (121), 34 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-02-18 06:16:36,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:16:36,227 INFO L225 Difference]: With dead ends: 301 [2023-02-18 06:16:36,227 INFO L226 Difference]: Without dead ends: 301 [2023-02-18 06:16:36,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 61 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=333, Invalid=1536, Unknown=23, NotChecked=0, Total=1892 [2023-02-18 06:16:36,228 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 551 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-02-18 06:16:36,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 791 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-02-18 06:16:36,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-02-18 06:16:36,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 189. [2023-02-18 06:16:36,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 167 states have (on average 1.215568862275449) internal successors, (203), 188 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:36,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 203 transitions. [2023-02-18 06:16:36,233 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 203 transitions. Word has length 42 [2023-02-18 06:16:36,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:16:36,233 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 203 transitions. [2023-02-18 06:16:36,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.6666666666666665) internal successors, (121), 34 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:16:36,234 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 203 transitions. [2023-02-18 06:16:36,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-18 06:16:36,234 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:16:36,234 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] [2023-02-18 06:16:36,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 06:16:36,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:16:36,441 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-02-18 06:16:36,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:16:36,442 INFO L85 PathProgramCache]: Analyzing trace with hash 899162441, now seen corresponding path program 1 times [2023-02-18 06:16:36,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:16:36,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748441812] [2023-02-18 06:16:36,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:36,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:16:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:36,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:36,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:16:36,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748441812] [2023-02-18 06:16:36,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748441812] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 06:16:36,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475963002] [2023-02-18 06:16:36,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:16:36,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:16:36,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:16:36,825 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 06:16:36,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 06:16:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:16:36,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-18 06:16:36,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 06:16:36,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 06:16:36,989 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:36,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-18 06:16:36,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 06:16:37,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 06:16:37,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 06:16:37,050 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:37,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 51 [2023-02-18 06:16:37,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-18 06:16:37,059 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 35 treesize of output 25 [2023-02-18 06:16:37,119 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:37,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2023-02-18 06:16:37,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-18 06:16:37,126 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:37,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 43 [2023-02-18 06:16:37,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2023-02-18 06:16:37,155 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:37,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 51 [2023-02-18 06:16:37,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-18 06:16:37,225 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 06:16:37,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-18 06:16:37,231 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:37,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 42 [2023-02-18 06:16:37,238 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 06:16:37,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-18 06:16:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:16:37,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 06:16:37,695 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1118 (Array Int Int)) (v_ArrVal_1117 (Array Int Int)) (|v_ULTIMATE.start_main_~end~0#1.offset_86| Int) (v_ArrVal_1114 (Array Int Int)) (v_ArrVal_1113 (Array Int Int))) (or (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1113))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (<= (+ (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1114) .cse0 v_ArrVal_1118) |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_86|) 8) 4) (select |c_#length| (select (select (store .cse1 .cse0 v_ArrVal_1117) |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_86|))))) (not (<= 0 |v_ULTIMATE.start_main_~end~0#1.offset_86|)) (not (<= |v_ULTIMATE.start_main_~end~0#1.offset_86| |c_ULTIMATE.start_main_~list~0#1.offset|)))) (forall ((v_ArrVal_1118 (Array Int Int)) (|v_ULTIMATE.start_main_~end~0#1.offset_86| Int) (v_ArrVal_1114 (Array Int Int)) (v_ArrVal_1113 (Array Int Int))) (or (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1114) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1113) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_1118) |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_86|) 8)) (not (<= 0 |v_ULTIMATE.start_main_~end~0#1.offset_86|)) (not (<= |v_ULTIMATE.start_main_~end~0#1.offset_86| |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2023-02-18 06:16:37,703 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (and (forall ((v_ArrVal_1118 (Array Int Int)) (v_ArrVal_1117 (Array Int Int)) (|v_ULTIMATE.start_main_~end~0#1.offset_86| Int) (v_ArrVal_1114 (Array Int Int)) (v_ArrVal_1113 (Array Int Int))) (or (let ((.cse2 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1113))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (<= (+ (+ (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1114) .cse1 v_ArrVal_1118) |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_86|) 8) 4) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1117) |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_86|))))) (not (<= 0 |v_ULTIMATE.start_main_~end~0#1.offset_86|)) (not (<= |v_ULTIMATE.start_main_~end~0#1.offset_86| |c_ULTIMATE.start_main_~list~0#1.offset|)))) (forall ((v_ArrVal_1118 (Array Int Int)) (|v_ULTIMATE.start_main_~end~0#1.offset_86| Int) (v_ArrVal_1114 (Array Int Int)) (v_ArrVal_1113 (Array Int Int))) (or (not (<= 0 |v_ULTIMATE.start_main_~end~0#1.offset_86|)) (not (<= |v_ULTIMATE.start_main_~end~0#1.offset_86| |c_ULTIMATE.start_main_~list~0#1.offset|)) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1114) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1113) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_1118) |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_86|) 8)))))) is different from false [2023-02-18 06:16:37,715 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:37,715 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 75 treesize of output 76 [2023-02-18 06:16:37,718 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:37,719 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 67 treesize of output 52 [2023-02-18 06:16:37,723 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:37,724 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 664 treesize of output 599 [2023-02-18 06:16:37,731 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:37,731 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 1264 treesize of output 1207 [2023-02-18 06:16:37,736 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 1192 treesize of output 1144 [2023-02-18 06:16:37,741 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 1144 treesize of output 1096 [2023-02-18 06:16:37,745 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 1096 treesize of output 1080 [2023-02-18 06:16:37,750 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:16:37,751 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 1080 treesize of output 988