./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/heap-manipulation/dll_of_dll-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/heap-manipulation/dll_of_dll-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 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 06:07:16,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 06:07:16,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 06:07:16,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 06:07:16,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 06:07:16,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 06:07:16,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 06:07:16,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 06:07:16,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 06:07:16,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 06:07:16,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 06:07:16,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 06:07:16,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 06:07:16,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 06:07:16,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 06:07:16,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 06:07:16,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 06:07:16,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 06:07:16,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 06:07:16,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 06:07:16,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 06:07:16,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 06:07:16,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 06:07:16,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 06:07:16,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 06:07:16,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 06:07:16,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 06:07:16,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 06:07:16,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 06:07:16,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 06:07:16,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 06:07:16,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 06:07:16,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 06:07:16,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 06:07:16,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 06:07:16,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 06:07:16,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 06:07:16,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 06:07:16,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 06:07:16,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 06:07:16,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 06:07:16,242 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-18 06:07:16,275 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 06:07:16,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 06:07:16,276 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 06:07:16,276 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 06:07:16,277 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 06:07:16,277 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 06:07:16,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 06:07:16,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 06:07:16,278 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 06:07:16,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 06:07:16,279 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 06:07:16,279 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 06:07:16,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 06:07:16,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 06:07:16,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 06:07:16,280 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 06:07:16,280 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 06:07:16,280 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 06:07:16,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 06:07:16,281 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 06:07:16,281 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 06:07:16,281 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 06:07:16,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 06:07:16,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 06:07:16,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 06:07:16,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 06:07:16,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 06:07:16,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 06:07:16,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 06:07:16,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 06:07:16,283 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 06:07:16,283 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 06:07:16,283 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 06:07:16,284 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 06:07:16,284 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 [2023-02-18 06:07:16,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 06:07:16,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 06:07:16,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 06:07:16,537 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 06:07:16,537 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 06:07:16,539 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2023-02-18 06:07:17,760 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 06:07:17,972 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 06:07:17,972 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2023-02-18 06:07:17,985 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/943cf14b3/e51c8f773d9e47f681ea1250413520b6/FLAG0af2066b4 [2023-02-18 06:07:17,998 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/943cf14b3/e51c8f773d9e47f681ea1250413520b6 [2023-02-18 06:07:18,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 06:07:18,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 06:07:18,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 06:07:18,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 06:07:18,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 06:07:18,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 06:07:18" (1/1) ... [2023-02-18 06:07:18,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@706e781b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:07:18, skipping insertion in model container [2023-02-18 06:07:18,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 06:07:18" (1/1) ... [2023-02-18 06:07:18,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 06:07:18,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 06:07:18,323 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/heap-manipulation/dll_of_dll-1.i[22634,22647] [2023-02-18 06:07:18,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 06:07:18,405 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 06:07:18,440 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/heap-manipulation/dll_of_dll-1.i[22634,22647] [2023-02-18 06:07:18,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 06:07:18,507 INFO L208 MainTranslator]: Completed translation [2023-02-18 06:07:18,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:07:18 WrapperNode [2023-02-18 06:07:18,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 06:07:18,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 06:07:18,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 06:07:18,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 06:07:18,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:07:18" (1/1) ... [2023-02-18 06:07:18,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:07:18" (1/1) ... [2023-02-18 06:07:18,556 INFO L138 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 234 [2023-02-18 06:07:18,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 06:07:18,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 06:07:18,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 06:07:18,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 06:07:18,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:07:18" (1/1) ... [2023-02-18 06:07:18,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:07:18" (1/1) ... [2023-02-18 06:07:18,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:07:18" (1/1) ... [2023-02-18 06:07:18,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:07:18" (1/1) ... [2023-02-18 06:07:18,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:07:18" (1/1) ... [2023-02-18 06:07:18,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:07:18" (1/1) ... [2023-02-18 06:07:18,617 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:07:18" (1/1) ... [2023-02-18 06:07:18,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:07:18" (1/1) ... [2023-02-18 06:07:18,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 06:07:18,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 06:07:18,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 06:07:18,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 06:07:18,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:07:18" (1/1) ... [2023-02-18 06:07:18,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 06:07:18,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:07:18,677 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 06:07:18,699 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 06:07:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-02-18 06:07:18,723 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-02-18 06:07:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2023-02-18 06:07:18,723 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2023-02-18 06:07:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 06:07:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 06:07:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2023-02-18 06:07:18,724 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2023-02-18 06:07:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 06:07:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-18 06:07:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-02-18 06:07:18,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-02-18 06:07:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-18 06:07:18,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 06:07:18,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-18 06:07:18,725 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2023-02-18 06:07:18,725 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2023-02-18 06:07:18,725 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2023-02-18 06:07:18,725 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2023-02-18 06:07:18,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 06:07:18,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 06:07:18,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 06:07:18,839 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 06:07:18,842 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 06:07:19,383 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 06:07:19,391 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 06:07:19,392 INFO L300 CfgBuilder]: Removed 38 assume(true) statements. [2023-02-18 06:07:19,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 06:07:19 BoogieIcfgContainer [2023-02-18 06:07:19,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 06:07:19,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 06:07:19,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 06:07:19,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 06:07:19,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 06:07:18" (1/3) ... [2023-02-18 06:07:19,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f788ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 06:07:19, skipping insertion in model container [2023-02-18 06:07:19,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:07:18" (2/3) ... [2023-02-18 06:07:19,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f788ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 06:07:19, skipping insertion in model container [2023-02-18 06:07:19,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 06:07:19" (3/3) ... [2023-02-18 06:07:19,407 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2023-02-18 06:07:19,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 06:07:19,424 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 98 error locations. [2023-02-18 06:07:19,480 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 06:07:19,488 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;@6db280c8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 06:07:19,489 INFO L358 AbstractCegarLoop]: Starting to check reachability of 98 error locations. [2023-02-18 06:07:19,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 271 states, 142 states have (on average 2.1619718309859155) internal successors, (307), 259 states have internal predecessors, (307), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-02-18 06:07:19,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 06:07:19,502 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:07:19,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:07:19,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ##fun~$Pointer$~TO~VOIDErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-02-18 06:07:19,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:07:19,507 INFO L85 PathProgramCache]: Analyzing trace with hash -853608627, now seen corresponding path program 1 times [2023-02-18 06:07:19,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:07:19,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198295983] [2023-02-18 06:07:19,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:07:19,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:07:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:07:19,726 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 06:07:19,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:07:19,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198295983] [2023-02-18 06:07:19,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198295983] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:07:19,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:07:19,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 06:07:19,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949122399] [2023-02-18 06:07:19,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:07:19,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 06:07:19,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:07:19,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 06:07:19,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 06:07:19,776 INFO L87 Difference]: Start difference. First operand has 271 states, 142 states have (on average 2.1619718309859155) internal successors, (307), 259 states have internal predecessors, (307), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:19,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:07:19,836 INFO L93 Difference]: Finished difference Result 269 states and 299 transitions. [2023-02-18 06:07:19,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 06:07:19,839 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 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 06:07:19,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:07:19,855 INFO L225 Difference]: With dead ends: 269 [2023-02-18 06:07:19,856 INFO L226 Difference]: Without dead ends: 267 [2023-02-18 06:07:19,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 06:07:19,862 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 06:07:19,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 06:07:19,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-02-18 06:07:19,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2023-02-18 06:07:19,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 140 states have (on average 1.8785714285714286) internal successors, (263), 255 states have internal predecessors, (263), 24 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-18 06:07:19,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 297 transitions. [2023-02-18 06:07:19,935 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 297 transitions. Word has length 9 [2023-02-18 06:07:19,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:07:19,936 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 297 transitions. [2023-02-18 06:07:19,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:19,937 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 297 transitions. [2023-02-18 06:07:19,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 06:07:19,938 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:07:19,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:07:19,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 06:07:19,938 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ##fun~$Pointer$~TO~VOIDErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-02-18 06:07:19,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:07:19,939 INFO L85 PathProgramCache]: Analyzing trace with hash -853608565, now seen corresponding path program 1 times [2023-02-18 06:07:19,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:07:19,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612290296] [2023-02-18 06:07:19,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:07:19,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:07:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:07:20,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:07:20,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:07:20,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612290296] [2023-02-18 06:07:20,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612290296] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:07:20,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:07:20,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 06:07:20,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590827122] [2023-02-18 06:07:20,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:07:20,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 06:07:20,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:07:20,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 06:07:20,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 06:07:20,125 INFO L87 Difference]: Start difference. First operand 267 states and 297 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:20,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:07:20,308 INFO L93 Difference]: Finished difference Result 267 states and 299 transitions. [2023-02-18 06:07:20,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 06:07:20,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 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 06:07:20,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:07:20,313 INFO L225 Difference]: With dead ends: 267 [2023-02-18 06:07:20,313 INFO L226 Difference]: Without dead ends: 267 [2023-02-18 06:07:20,316 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 06:07:20,318 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 23 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:07:20,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 463 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:07:20,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-02-18 06:07:20,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2023-02-18 06:07:20,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 140 states have (on average 1.8642857142857143) internal successors, (261), 253 states have internal predecessors, (261), 24 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-18 06:07:20,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 295 transitions. [2023-02-18 06:07:20,343 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 295 transitions. Word has length 9 [2023-02-18 06:07:20,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:07:20,343 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 295 transitions. [2023-02-18 06:07:20,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:20,344 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 295 transitions. [2023-02-18 06:07:20,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 06:07:20,344 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:07:20,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:07:20,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 06:07:20,345 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ##fun~$Pointer$~TO~VOIDErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-02-18 06:07:20,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:07:20,346 INFO L85 PathProgramCache]: Analyzing trace with hash -853608564, now seen corresponding path program 1 times [2023-02-18 06:07:20,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:07:20,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761140999] [2023-02-18 06:07:20,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:07:20,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:07:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:07:20,524 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 06:07:20,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:07:20,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761140999] [2023-02-18 06:07:20,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761140999] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:07:20,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:07:20,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 06:07:20,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961972978] [2023-02-18 06:07:20,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:07:20,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 06:07:20,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:07:20,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 06:07:20,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:07:20,527 INFO L87 Difference]: Start difference. First operand 265 states and 295 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:20,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:07:20,610 INFO L93 Difference]: Finished difference Result 291 states and 329 transitions. [2023-02-18 06:07:20,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 06:07:20,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 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 06:07:20,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:07:20,612 INFO L225 Difference]: With dead ends: 291 [2023-02-18 06:07:20,612 INFO L226 Difference]: Without dead ends: 291 [2023-02-18 06:07:20,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 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 06:07:20,614 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 19 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:07:20,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1200 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:07:20,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-02-18 06:07:20,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 283. [2023-02-18 06:07:20,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 151 states have (on average 1.8278145695364238) internal successors, (276), 264 states have internal predecessors, (276), 29 states have call successors, (29), 8 states have call predecessors, (29), 7 states have return successors, (18), 13 states have call predecessors, (18), 15 states have call successors, (18) [2023-02-18 06:07:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 323 transitions. [2023-02-18 06:07:20,623 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 323 transitions. Word has length 9 [2023-02-18 06:07:20,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:07:20,624 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 323 transitions. [2023-02-18 06:07:20,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:20,624 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 323 transitions. [2023-02-18 06:07:20,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-18 06:07:20,624 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:07:20,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:07:20,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 06:07:20,625 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-02-18 06:07:20,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:07:20,626 INFO L85 PathProgramCache]: Analyzing trace with hash 33414869, now seen corresponding path program 1 times [2023-02-18 06:07:20,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:07:20,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215607289] [2023-02-18 06:07:20,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:07:20,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:07:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:07:20,665 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 06:07:20,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:07:20,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215607289] [2023-02-18 06:07:20,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215607289] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:07:20,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:07:20,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 06:07:20,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358692755] [2023-02-18 06:07:20,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:07:20,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 06:07:20,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:07:20,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 06:07:20,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 06:07:20,669 INFO L87 Difference]: Start difference. First operand 283 states and 323 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:20,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:07:20,783 INFO L93 Difference]: Finished difference Result 280 states and 320 transitions. [2023-02-18 06:07:20,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 06:07:20,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 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 06:07:20,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:07:20,786 INFO L225 Difference]: With dead ends: 280 [2023-02-18 06:07:20,786 INFO L226 Difference]: Without dead ends: 280 [2023-02-18 06:07:20,786 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 06:07:20,794 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 20 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:07:20,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 460 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:07:20,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-02-18 06:07:20,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2023-02-18 06:07:20,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 151 states have (on average 1.8079470198675496) internal successors, (273), 261 states have internal predecessors, (273), 29 states have call successors, (29), 8 states have call predecessors, (29), 7 states have return successors, (18), 13 states have call predecessors, (18), 15 states have call successors, (18) [2023-02-18 06:07:20,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 320 transitions. [2023-02-18 06:07:20,808 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 320 transitions. Word has length 11 [2023-02-18 06:07:20,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:07:20,808 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 320 transitions. [2023-02-18 06:07:20,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:20,809 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 320 transitions. [2023-02-18 06:07:20,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-18 06:07:20,809 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:07:20,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:07:20,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 06:07:20,810 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-02-18 06:07:20,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:07:20,811 INFO L85 PathProgramCache]: Analyzing trace with hash 33414870, now seen corresponding path program 1 times [2023-02-18 06:07:20,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:07:20,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472560414] [2023-02-18 06:07:20,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:07:20,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:07:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:07:20,889 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 06:07:20,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:07:20,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472560414] [2023-02-18 06:07:20,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472560414] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:07:20,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:07:20,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 06:07:20,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950753450] [2023-02-18 06:07:20,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:07:20,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 06:07:20,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:07:20,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 06:07:20,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 06:07:20,895 INFO L87 Difference]: Start difference. First operand 280 states and 320 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:21,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:07:21,019 INFO L93 Difference]: Finished difference Result 277 states and 317 transitions. [2023-02-18 06:07:21,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 06:07:21,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 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 06:07:21,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:07:21,022 INFO L225 Difference]: With dead ends: 277 [2023-02-18 06:07:21,022 INFO L226 Difference]: Without dead ends: 277 [2023-02-18 06:07:21,023 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 06:07:21,028 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 17 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:07:21,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 465 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:07:21,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-02-18 06:07:21,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2023-02-18 06:07:21,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 151 states have (on average 1.7880794701986755) internal successors, (270), 258 states have internal predecessors, (270), 29 states have call successors, (29), 8 states have call predecessors, (29), 7 states have return successors, (18), 13 states have call predecessors, (18), 15 states have call successors, (18) [2023-02-18 06:07:21,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 317 transitions. [2023-02-18 06:07:21,039 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 317 transitions. Word has length 11 [2023-02-18 06:07:21,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:07:21,039 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 317 transitions. [2023-02-18 06:07:21,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:21,040 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 317 transitions. [2023-02-18 06:07:21,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 06:07:21,040 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:07:21,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:07:21,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-18 06:07:21,041 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting dll_insert_masterErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-02-18 06:07:21,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:07:21,041 INFO L85 PathProgramCache]: Analyzing trace with hash -226556130, now seen corresponding path program 1 times [2023-02-18 06:07:21,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:07:21,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008415632] [2023-02-18 06:07:21,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:07:21,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:07:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:07:21,271 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 06:07:21,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:07:21,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008415632] [2023-02-18 06:07:21,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008415632] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:07:21,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:07:21,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 06:07:21,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698760024] [2023-02-18 06:07:21,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:07:21,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 06:07:21,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:07:21,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 06:07:21,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-02-18 06:07:21,274 INFO L87 Difference]: Start difference. First operand 277 states and 317 transitions. Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:21,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:07:21,669 INFO L93 Difference]: Finished difference Result 300 states and 343 transitions. [2023-02-18 06:07:21,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 06:07:21,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 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 06:07:21,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:07:21,672 INFO L225 Difference]: With dead ends: 300 [2023-02-18 06:07:21,672 INFO L226 Difference]: Without dead ends: 300 [2023-02-18 06:07:21,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-02-18 06:07:21,673 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 115 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 06:07:21,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1145 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 06:07:21,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-02-18 06:07:21,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 289. [2023-02-18 06:07:21,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 162 states have (on average 1.7469135802469136) internal successors, (283), 268 states have internal predecessors, (283), 30 states have call successors, (30), 10 states have call predecessors, (30), 7 states have return successors, (19), 13 states have call predecessors, (19), 16 states have call successors, (19) [2023-02-18 06:07:21,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 332 transitions. [2023-02-18 06:07:21,682 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 332 transitions. Word has length 16 [2023-02-18 06:07:21,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:07:21,682 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 332 transitions. [2023-02-18 06:07:21,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:21,683 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 332 transitions. [2023-02-18 06:07:21,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 06:07:21,683 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:07:21,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:07:21,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-18 06:07:21,684 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting dll_insert_masterErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-02-18 06:07:21,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:07:21,685 INFO L85 PathProgramCache]: Analyzing trace with hash -226556129, now seen corresponding path program 1 times [2023-02-18 06:07:21,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:07:21,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246635957] [2023-02-18 06:07:21,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:07:21,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:07:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:07:21,953 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 06:07:21,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:07:21,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246635957] [2023-02-18 06:07:21,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246635957] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:07:21,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:07:21,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 06:07:21,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820019130] [2023-02-18 06:07:21,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:07:21,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 06:07:21,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:07:21,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 06:07:21,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-18 06:07:21,956 INFO L87 Difference]: Start difference. First operand 289 states and 332 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:22,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:07:22,432 INFO L93 Difference]: Finished difference Result 299 states and 342 transitions. [2023-02-18 06:07:22,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 06:07:22,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 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 06:07:22,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:07:22,434 INFO L225 Difference]: With dead ends: 299 [2023-02-18 06:07:22,435 INFO L226 Difference]: Without dead ends: 299 [2023-02-18 06:07:22,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-18 06:07:22,435 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 80 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 06:07:22,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1016 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 06:07:22,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-02-18 06:07:22,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 289. [2023-02-18 06:07:22,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 162 states have (on average 1.7345679012345678) internal successors, (281), 268 states have internal predecessors, (281), 30 states have call successors, (30), 10 states have call predecessors, (30), 7 states have return successors, (19), 13 states have call predecessors, (19), 16 states have call successors, (19) [2023-02-18 06:07:22,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 330 transitions. [2023-02-18 06:07:22,444 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 330 transitions. Word has length 16 [2023-02-18 06:07:22,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:07:22,445 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 330 transitions. [2023-02-18 06:07:22,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:22,445 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 330 transitions. [2023-02-18 06:07:22,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-18 06:07:22,446 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:07:22,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:07:22,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-18 06:07:22,447 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting dll_insert_masterErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-02-18 06:07:22,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:07:22,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1322891007, now seen corresponding path program 1 times [2023-02-18 06:07:22,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:07:22,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538204210] [2023-02-18 06:07:22,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:07:22,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:07:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:07:22,504 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 06:07:22,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:07:22,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538204210] [2023-02-18 06:07:22,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538204210] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:07:22,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:07:22,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 06:07:22,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531193979] [2023-02-18 06:07:22,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:07:22,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 06:07:22,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:07:22,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 06:07:22,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:07:22,507 INFO L87 Difference]: Start difference. First operand 289 states and 330 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:22,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:07:22,709 INFO L93 Difference]: Finished difference Result 288 states and 329 transitions. [2023-02-18 06:07:22,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 06:07:22,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-18 06:07:22,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:07:22,711 INFO L225 Difference]: With dead ends: 288 [2023-02-18 06:07:22,711 INFO L226 Difference]: Without dead ends: 288 [2023-02-18 06:07:22,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-18 06:07:22,712 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 40 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 06:07:22,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 813 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 06:07:22,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-02-18 06:07:22,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2023-02-18 06:07:22,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 162 states have (on average 1.728395061728395) internal successors, (280), 267 states have internal predecessors, (280), 30 states have call successors, (30), 10 states have call predecessors, (30), 7 states have return successors, (19), 13 states have call predecessors, (19), 16 states have call successors, (19) [2023-02-18 06:07:22,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 329 transitions. [2023-02-18 06:07:22,721 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 329 transitions. Word has length 18 [2023-02-18 06:07:22,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:07:22,721 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 329 transitions. [2023-02-18 06:07:22,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:22,722 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 329 transitions. [2023-02-18 06:07:22,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-18 06:07:22,722 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:07:22,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:07:22,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-18 06:07:22,723 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting dll_insert_masterErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-02-18 06:07:22,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:07:22,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1322891008, now seen corresponding path program 1 times [2023-02-18 06:07:22,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:07:22,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050648607] [2023-02-18 06:07:22,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:07:22,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:07:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:07:22,823 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 06:07:22,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:07:22,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050648607] [2023-02-18 06:07:22,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050648607] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:07:22,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:07:22,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 06:07:22,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828411379] [2023-02-18 06:07:22,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:07:22,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 06:07:22,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:07:22,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 06:07:22,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-18 06:07:22,826 INFO L87 Difference]: Start difference. First operand 288 states and 329 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:22,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:07:22,997 INFO L93 Difference]: Finished difference Result 287 states and 328 transitions. [2023-02-18 06:07:22,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 06:07:22,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-18 06:07:22,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:07:22,999 INFO L225 Difference]: With dead ends: 287 [2023-02-18 06:07:22,999 INFO L226 Difference]: Without dead ends: 287 [2023-02-18 06:07:23,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-18 06:07:23,000 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 54 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:07:23,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 914 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:07:23,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-02-18 06:07:23,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2023-02-18 06:07:23,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 162 states have (on average 1.7222222222222223) internal successors, (279), 266 states have internal predecessors, (279), 30 states have call successors, (30), 10 states have call predecessors, (30), 7 states have return successors, (19), 13 states have call predecessors, (19), 16 states have call successors, (19) [2023-02-18 06:07:23,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 328 transitions. [2023-02-18 06:07:23,021 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 328 transitions. Word has length 18 [2023-02-18 06:07:23,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:07:23,021 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 328 transitions. [2023-02-18 06:07:23,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:23,022 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 328 transitions. [2023-02-18 06:07:23,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-18 06:07:23,022 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:07:23,023 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] [2023-02-18 06:07:23,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-18 06:07:23,023 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting dll_insert_masterErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-02-18 06:07:23,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:07:23,024 INFO L85 PathProgramCache]: Analyzing trace with hash -12061856, now seen corresponding path program 1 times [2023-02-18 06:07:23,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:07:23,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33618522] [2023-02-18 06:07:23,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:07:23,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:07:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:07:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:07:23,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:07:23,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33618522] [2023-02-18 06:07:23,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33618522] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:07:23,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:07:23,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-18 06:07:23,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786452161] [2023-02-18 06:07:23,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:07:23,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 06:07:23,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:07:23,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 06:07:23,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-02-18 06:07:23,382 INFO L87 Difference]: Start difference. First operand 287 states and 328 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:23,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:07:23,780 INFO L93 Difference]: Finished difference Result 326 states and 372 transitions. [2023-02-18 06:07:23,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 06:07:23,781 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-18 06:07:23,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:07:23,782 INFO L225 Difference]: With dead ends: 326 [2023-02-18 06:07:23,782 INFO L226 Difference]: Without dead ends: 326 [2023-02-18 06:07:23,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-02-18 06:07:23,783 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 47 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 06:07:23,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1780 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 06:07:23,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-02-18 06:07:23,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 307. [2023-02-18 06:07:23,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 179 states have (on average 1.681564245810056) internal successors, (301), 283 states have internal predecessors, (301), 32 states have call successors, (32), 12 states have call predecessors, (32), 8 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2023-02-18 06:07:23,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 356 transitions. [2023-02-18 06:07:23,791 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 356 transitions. Word has length 20 [2023-02-18 06:07:23,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:07:23,791 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 356 transitions. [2023-02-18 06:07:23,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:23,792 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 356 transitions. [2023-02-18 06:07:23,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-18 06:07:23,792 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:07:23,792 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:07:23,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-18 06:07:23,793 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ##fun~$Pointer$~TO~VOIDErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-02-18 06:07:23,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:07:23,794 INFO L85 PathProgramCache]: Analyzing trace with hash 551710607, now seen corresponding path program 1 times [2023-02-18 06:07:23,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:07:23,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513649889] [2023-02-18 06:07:23,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:07:23,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:07:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:07:23,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 06:07:23,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:07:23,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513649889] [2023-02-18 06:07:23,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513649889] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:07:23,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:07:23,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 06:07:23,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179151835] [2023-02-18 06:07:23,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:07:23,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 06:07:23,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:07:23,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 06:07:23,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 06:07:23,887 INFO L87 Difference]: Start difference. First operand 307 states and 356 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:23,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:07:23,983 INFO L93 Difference]: Finished difference Result 305 states and 354 transitions. [2023-02-18 06:07:23,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 06:07:23,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 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 06:07:23,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:07:23,986 INFO L225 Difference]: With dead ends: 305 [2023-02-18 06:07:23,986 INFO L226 Difference]: Without dead ends: 305 [2023-02-18 06:07:23,987 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 06:07:23,988 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 21 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:07:23,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 458 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:07:23,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-02-18 06:07:23,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2023-02-18 06:07:23,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 179 states have (on average 1.670391061452514) internal successors, (299), 281 states have internal predecessors, (299), 32 states have call successors, (32), 12 states have call predecessors, (32), 8 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2023-02-18 06:07:24,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 354 transitions. [2023-02-18 06:07:24,000 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 354 transitions. Word has length 27 [2023-02-18 06:07:24,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:07:24,001 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 354 transitions. [2023-02-18 06:07:24,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:24,001 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 354 transitions. [2023-02-18 06:07:24,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-18 06:07:24,004 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:07:24,004 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:07:24,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-18 06:07:24,005 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ##fun~$Pointer$~TO~VOIDErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-02-18 06:07:24,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:07:24,005 INFO L85 PathProgramCache]: Analyzing trace with hash 67060467, now seen corresponding path program 1 times [2023-02-18 06:07:24,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:07:24,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681741923] [2023-02-18 06:07:24,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:07:24,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:07:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:07:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 06:07:24,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:07:24,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681741923] [2023-02-18 06:07:24,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681741923] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:07:24,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:07:24,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 06:07:24,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657130567] [2023-02-18 06:07:24,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:07:24,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 06:07:24,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:07:24,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 06:07:24,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 06:07:24,313 INFO L87 Difference]: Start difference. First operand 305 states and 354 transitions. Second operand has 6 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:24,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:07:24,603 INFO L93 Difference]: Finished difference Result 304 states and 353 transitions. [2023-02-18 06:07:24,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 06:07:24,603 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 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 06:07:24,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:07:24,605 INFO L225 Difference]: With dead ends: 304 [2023-02-18 06:07:24,605 INFO L226 Difference]: Without dead ends: 304 [2023-02-18 06:07:24,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-02-18 06:07:24,606 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 62 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 06:07:24,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 873 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 06:07:24,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-02-18 06:07:24,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 303. [2023-02-18 06:07:24,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 179 states have (on average 1.6592178770949721) internal successors, (297), 279 states have internal predecessors, (297), 32 states have call successors, (32), 12 states have call predecessors, (32), 8 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2023-02-18 06:07:24,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 352 transitions. [2023-02-18 06:07:24,618 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 352 transitions. Word has length 31 [2023-02-18 06:07:24,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:07:24,618 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 352 transitions. [2023-02-18 06:07:24,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:24,619 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 352 transitions. [2023-02-18 06:07:24,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-18 06:07:24,623 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:07:24,623 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:07:24,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-18 06:07:24,624 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ##fun~$Pointer$~TO~VOIDErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-02-18 06:07:24,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:07:24,625 INFO L85 PathProgramCache]: Analyzing trace with hash 67060466, now seen corresponding path program 1 times [2023-02-18 06:07:24,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:07:24,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571468897] [2023-02-18 06:07:24,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:07:24,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:07:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:07:24,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 06:07:24,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:07:24,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571468897] [2023-02-18 06:07:24,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571468897] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:07:24,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:07:24,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 06:07:24,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983660458] [2023-02-18 06:07:24,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:07:24,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 06:07:24,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:07:24,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 06:07:24,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-02-18 06:07:24,800 INFO L87 Difference]: Start difference. First operand 303 states and 352 transitions. Second operand has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:25,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:07:25,032 INFO L93 Difference]: Finished difference Result 301 states and 350 transitions. [2023-02-18 06:07:25,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 06:07:25,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 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 06:07:25,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:07:25,035 INFO L225 Difference]: With dead ends: 301 [2023-02-18 06:07:25,035 INFO L226 Difference]: Without dead ends: 301 [2023-02-18 06:07:25,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-18 06:07:25,037 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 70 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 06:07:25,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 971 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 06:07:25,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-02-18 06:07:25,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2023-02-18 06:07:25,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 179 states have (on average 1.6480446927374302) internal successors, (295), 277 states have internal predecessors, (295), 32 states have call successors, (32), 12 states have call predecessors, (32), 8 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2023-02-18 06:07:25,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 350 transitions. [2023-02-18 06:07:25,045 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 350 transitions. Word has length 31 [2023-02-18 06:07:25,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:07:25,047 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 350 transitions. [2023-02-18 06:07:25,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:25,048 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 350 transitions. [2023-02-18 06:07:25,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-18 06:07:25,049 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:07:25,049 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:07:25,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-18 06:07:25,049 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ##fun~$Pointer$~TO~VOIDErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-02-18 06:07:25,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:07:25,050 INFO L85 PathProgramCache]: Analyzing trace with hash 20600531, now seen corresponding path program 1 times [2023-02-18 06:07:25,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:07:25,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266736066] [2023-02-18 06:07:25,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:07:25,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:07:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:07:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 06:07:25,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:07:25,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266736066] [2023-02-18 06:07:25,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266736066] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:07:25,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:07:25,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 06:07:25,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328129044] [2023-02-18 06:07:25,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:07:25,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 06:07:25,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:07:25,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 06:07:25,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:07:25,140 INFO L87 Difference]: Start difference. First operand 301 states and 350 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:25,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:07:25,309 INFO L93 Difference]: Finished difference Result 300 states and 349 transitions. [2023-02-18 06:07:25,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 06:07:25,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-02-18 06:07:25,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:07:25,315 INFO L225 Difference]: With dead ends: 300 [2023-02-18 06:07:25,315 INFO L226 Difference]: Without dead ends: 300 [2023-02-18 06:07:25,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-18 06:07:25,316 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 38 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:07:25,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 801 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:07:25,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-02-18 06:07:25,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2023-02-18 06:07:25,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 179 states have (on average 1.6424581005586592) internal successors, (294), 276 states have internal predecessors, (294), 32 states have call successors, (32), 12 states have call predecessors, (32), 8 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2023-02-18 06:07:25,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 349 transitions. [2023-02-18 06:07:25,329 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 349 transitions. Word has length 33 [2023-02-18 06:07:25,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:07:25,329 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 349 transitions. [2023-02-18 06:07:25,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:25,329 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 349 transitions. [2023-02-18 06:07:25,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-18 06:07:25,331 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:07:25,331 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:07:25,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-18 06:07:25,332 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ##fun~$Pointer$~TO~VOIDErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-02-18 06:07:25,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:07:25,333 INFO L85 PathProgramCache]: Analyzing trace with hash 20600532, now seen corresponding path program 1 times [2023-02-18 06:07:25,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:07:25,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10223104] [2023-02-18 06:07:25,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:07:25,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:07:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:07:25,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 06:07:25,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:07:25,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10223104] [2023-02-18 06:07:25,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10223104] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:07:25,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:07:25,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 06:07:25,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594227067] [2023-02-18 06:07:25,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:07:25,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 06:07:25,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:07:25,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 06:07:25,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-18 06:07:25,476 INFO L87 Difference]: Start difference. First operand 300 states and 349 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:25,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:07:25,663 INFO L93 Difference]: Finished difference Result 299 states and 348 transitions. [2023-02-18 06:07:25,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 06:07:25,664 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-02-18 06:07:25,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:07:25,666 INFO L225 Difference]: With dead ends: 299 [2023-02-18 06:07:25,666 INFO L226 Difference]: Without dead ends: 299 [2023-02-18 06:07:25,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-18 06:07:25,668 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 36 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 06:07:25,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1086 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 06:07:25,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-02-18 06:07:25,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-02-18 06:07:25,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 179 states have (on average 1.6368715083798884) internal successors, (293), 275 states have internal predecessors, (293), 32 states have call successors, (32), 12 states have call predecessors, (32), 8 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2023-02-18 06:07:25,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 348 transitions. [2023-02-18 06:07:25,676 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 348 transitions. Word has length 33 [2023-02-18 06:07:25,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:07:25,677 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 348 transitions. [2023-02-18 06:07:25,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:25,677 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 348 transitions. [2023-02-18 06:07:25,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-18 06:07:25,678 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:07:25,678 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:07:25,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-18 06:07:25,679 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ##fun~$Pointer$~TO~VOIDErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-02-18 06:07:25,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:07:25,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1677723852, now seen corresponding path program 1 times [2023-02-18 06:07:25,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:07:25,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501576461] [2023-02-18 06:07:25,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:07:25,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:07:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:07:26,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 06:07:26,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:07:26,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501576461] [2023-02-18 06:07:26,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501576461] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:07:26,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:07:26,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-18 06:07:26,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928987512] [2023-02-18 06:07:26,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:07:26,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 06:07:26,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:07:26,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 06:07:26,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-02-18 06:07:26,041 INFO L87 Difference]: Start difference. First operand 299 states and 348 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:26,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:07:26,323 INFO L93 Difference]: Finished difference Result 313 states and 363 transitions. [2023-02-18 06:07:26,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 06:07:26,323 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 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 06:07:26,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:07:26,324 INFO L225 Difference]: With dead ends: 313 [2023-02-18 06:07:26,325 INFO L226 Difference]: Without dead ends: 313 [2023-02-18 06:07:26,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-02-18 06:07:26,325 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 28 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 06:07:26,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1587 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 06:07:26,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-02-18 06:07:26,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 312. [2023-02-18 06:07:26,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 191 states have (on average 1.5968586387434556) internal successors, (305), 288 states have internal predecessors, (305), 32 states have call successors, (32), 12 states have call predecessors, (32), 9 states have return successors, (25), 14 states have call predecessors, (25), 18 states have call successors, (25) [2023-02-18 06:07:26,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 362 transitions. [2023-02-18 06:07:26,332 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 362 transitions. Word has length 35 [2023-02-18 06:07:26,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:07:26,332 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 362 transitions. [2023-02-18 06:07:26,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:07:26,333 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 362 transitions. [2023-02-18 06:07:26,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-02-18 06:07:26,333 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:07:26,333 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:07:26,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-18 06:07:26,334 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ##fun~$Pointer$~TO~VOIDErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-02-18 06:07:26,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:07:26,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1451018694, now seen corresponding path program 1 times [2023-02-18 06:07:26,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:07:26,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196685504] [2023-02-18 06:07:26,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:07:26,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:07:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:07:26,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-18 06:07:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:07:27,100 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 06:07:27,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:07:27,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196685504] [2023-02-18 06:07:27,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196685504] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 06:07:27,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576735908] [2023-02-18 06:07:27,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:07:27,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:07:27,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:07:27,105 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 06:07:27,131 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 06:07:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:07:27,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 61 conjunts are in the unsatisfiable core [2023-02-18 06:07:27,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 06:07:27,462 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 06:07:27,491 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 06:07:27,633 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:07:27,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 44 [2023-02-18 06:07:27,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 06:07:27,667 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 38 [2023-02-18 06:07:27,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 06:07:27,679 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 38 [2023-02-18 06:07:27,809 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 84 treesize of output 60 [2023-02-18 06:07:27,872 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 06:07:27,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 06:07:27,918 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_578 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_578) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~dll#1.base|) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~dll#1.offset|)) 1)) is different from false [2023-02-18 06:07:27,936 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_578 (Array Int Int)) (|v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| Int)) (or (= (select (store |c_#valid| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| 1) (select (select (store |c_#memory_$Pointer$.base| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| v_ArrVal_578) |c_##fun~$Pointer$~TO~VOID_#~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#~10#1.offset|)) 1) (not (< |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| |c_#StackHeapBarrier|)))) is different from false [2023-02-18 06:07:28,037 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_578 (Array Int Int)) (|v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| Int)) (or (not (< |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| |c_#StackHeapBarrier|)) (= (select (store |c_#valid| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| 1) (select (select (store |c_#memory_$Pointer$.base| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| v_ArrVal_578) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|)) 1))) is different from false [2023-02-18 06:07:28,055 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:07:28,056 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 26 treesize of output 27 [2023-02-18 06:07:28,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2023-02-18 06:07:28,064 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 38 [2023-02-18 06:07:28,067 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 21 [2023-02-18 06:07:28,138 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:07:28,138 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 23 treesize of output 24 [2023-02-18 06:07:28,140 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 06:07:28,142 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:07:28,143 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 21 treesize of output 24 [2023-02-18 06:07:30,382 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 23 treesize of output 21 [2023-02-18 06:07:30,394 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 23 treesize of output 21 [2023-02-18 06:07:30,430 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 4 not checked. [2023-02-18 06:07:30,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576735908] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 06:07:30,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 06:07:30,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 38 [2023-02-18 06:07:30,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094875629] [2023-02-18 06:07:30,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 06:07:30,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-02-18 06:07:30,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:07:30,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-02-18 06:07:30,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1136, Unknown=22, NotChecked=210, Total=1482 [2023-02-18 06:07:30,434 INFO L87 Difference]: Start difference. First operand 312 states and 362 transitions. Second operand has 39 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 33 states have internal predecessors, (88), 6 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 06:07:32,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:07:32,947 INFO L93 Difference]: Finished difference Result 316 states and 365 transitions. [2023-02-18 06:07:32,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-18 06:07:32,948 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 33 states have internal predecessors, (88), 6 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 51 [2023-02-18 06:07:32,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:07:32,949 INFO L225 Difference]: With dead ends: 316 [2023-02-18 06:07:32,949 INFO L226 Difference]: Without dead ends: 316 [2023-02-18 06:07:32,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 3 IntricatePredicates, 4 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=422, Invalid=2320, Unknown=26, NotChecked=312, Total=3080 [2023-02-18 06:07:32,951 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 271 mSDsluCounter, 3251 mSDsCounter, 0 mSdLazyCounter, 3074 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 3455 SdHoareTripleChecker+Invalid, 3683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 533 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:07:32,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 3455 Invalid, 3683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 3074 Invalid, 0 Unknown, 533 Unchecked, 2.1s Time] [2023-02-18 06:07:32,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-02-18 06:07:32,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 311. [2023-02-18 06:07:32,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 191 states have (on average 1.5916230366492146) internal successors, (304), 287 states have internal predecessors, (304), 32 states have call successors, (32), 12 states have call predecessors, (32), 9 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2023-02-18 06:07:32,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 359 transitions. [2023-02-18 06:07:32,958 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 359 transitions. Word has length 51 [2023-02-18 06:07:32,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:07:32,958 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 359 transitions. [2023-02-18 06:07:32,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 33 states have internal predecessors, (88), 6 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 06:07:32,958 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 359 transitions. [2023-02-18 06:07:32,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-02-18 06:07:32,959 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:07:32,959 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:07:32,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 06:07:33,160 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,SelfDestructingSolverStorable16 [2023-02-18 06:07:33,160 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ##fun~$Pointer$~TO~VOIDErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-02-18 06:07:33,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:07:33,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1451018695, now seen corresponding path program 1 times [2023-02-18 06:07:33,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:07:33,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970186750] [2023-02-18 06:07:33,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:07:33,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:07:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:07:33,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-18 06:07:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:07:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 06:07:34,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:07:34,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970186750] [2023-02-18 06:07:34,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970186750] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 06:07:34,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644797739] [2023-02-18 06:07:34,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:07:34,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:07:34,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:07:34,151 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 06:07:34,154 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 06:07:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:07:34,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 82 conjunts are in the unsatisfiable core [2023-02-18 06:07:34,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 06:07:34,357 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 06:07:34,462 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 06:07:34,466 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 11 treesize of output 7 [2023-02-18 06:07:34,577 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:07:34,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 42 [2023-02-18 06:07:34,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 06:07:34,615 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 28 treesize of output 28 [2023-02-18 06:07:34,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-18 06:07:34,632 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 28 treesize of output 28 [2023-02-18 06:07:34,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-18 06:07:34,673 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 21 treesize of output 13 [2023-02-18 06:07:34,675 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 06:07:34,725 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 06:07:34,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 06:07:34,821 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_769 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_769) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~dll#1.base|) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~dll#1.offset|) 4))) (forall ((v_ArrVal_768 (Array Int Int)) (v_ArrVal_769 (Array Int Int))) (<= (+ (+ (select (select (store |c_#memory_$Pointer$.offset| |c_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_769) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~dll#1.base|) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~dll#1.offset|) 4) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_768) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~dll#1.base|) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~dll#1.offset|))))) is different from false [2023-02-18 06:07:35,065 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:07:35,066 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 84 [2023-02-18 06:07:35,071 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 146 treesize of output 126 [2023-02-18 06:07:35,075 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:07:35,075 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 106 treesize of output 91 [2023-02-18 06:07:35,079 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 148 treesize of output 132 [2023-02-18 06:07:35,089 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:07:35,090 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 206 treesize of output 202 [2023-02-18 06:07:35,094 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 183 treesize of output 175 [2023-02-18 06:07:35,099 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 186 treesize of output 176 [2023-02-18 06:07:35,105 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:07:35,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 183 treesize of output 201 [2023-02-18 06:07:35,111 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 163 treesize of output 161 [2023-02-18 06:07:35,143 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:07:35,144 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 42 treesize of output 43 [2023-02-18 06:07:35,148 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:07:35,148 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 34 treesize of output 35 [2023-02-18 06:07:35,152 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:07:35,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 65 [2023-02-18 06:07:35,160 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:07:35,160 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 102 treesize of output 101 [2023-02-18 06:07:35,167 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 44 treesize of output 40 [2023-02-18 06:07:35,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 78 [2023-02-18 06:07:35,194 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:07:35,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2023-02-18 06:07:35,198 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 06:07:35,202 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:07:35,203 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 18 treesize of output 21 [2023-02-18 06:07:35,659 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:07:35,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 257 treesize of output 273 [2023-02-18 06:07:35,936 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:07:35,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 329 treesize of output 1237