./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 791161d1 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-?-791161d [2022-07-23 06:16:42,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 06:16:42,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 06:16:42,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 06:16:42,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 06:16:42,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 06:16:42,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 06:16:42,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 06:16:42,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 06:16:42,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 06:16:42,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 06:16:42,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 06:16:42,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 06:16:42,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 06:16:42,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 06:16:42,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 06:16:42,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 06:16:42,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 06:16:42,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 06:16:42,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 06:16:42,833 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 06:16:42,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 06:16:42,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 06:16:42,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 06:16:42,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 06:16:42,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 06:16:42,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 06:16:42,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 06:16:42,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 06:16:42,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 06:16:42,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 06:16:42,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 06:16:42,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 06:16:42,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 06:16:42,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 06:16:42,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 06:16:42,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 06:16:42,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 06:16:42,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 06:16:42,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 06:16:42,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 06:16:42,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 06:16:42,861 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-23 06:16:42,908 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 06:16:42,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 06:16:42,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 06:16:42,909 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 06:16:42,909 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 06:16:42,909 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 06:16:42,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 06:16:42,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 06:16:42,910 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 06:16:42,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 06:16:42,911 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 06:16:42,911 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 06:16:42,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 06:16:42,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 06:16:42,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 06:16:42,912 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-23 06:16:42,912 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-23 06:16:42,912 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-23 06:16:42,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 06:16:42,912 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 06:16:42,912 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 06:16:42,913 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 06:16:42,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 06:16:42,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 06:16:42,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 06:16:42,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 06:16:42,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 06:16:42,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 06:16:42,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 06:16:42,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 06:16:42,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 [2022-07-23 06:16:43,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 06:16:43,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 06:16:43,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 06:16:43,366 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 06:16:43,367 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 06:16:43,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2022-07-23 06:16:43,457 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71998c4fb/f76eb239d2ea493fa3c50caf8f9b465d/FLAGa3f590c49 [2022-07-23 06:16:44,184 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 06:16:44,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2022-07-23 06:16:44,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71998c4fb/f76eb239d2ea493fa3c50caf8f9b465d/FLAGa3f590c49 [2022-07-23 06:16:44,425 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71998c4fb/f76eb239d2ea493fa3c50caf8f9b465d [2022-07-23 06:16:44,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 06:16:44,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 06:16:44,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 06:16:44,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 06:16:44,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 06:16:44,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:16:44" (1/1) ... [2022-07-23 06:16:44,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62a25252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:16:44, skipping insertion in model container [2022-07-23 06:16:44,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:16:44" (1/1) ... [2022-07-23 06:16:44,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 06:16:44,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 06:16:44,728 WARN L230 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] [2022-07-23 06:16:44,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 06:16:44,775 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 06:16:44,789 WARN L230 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] [2022-07-23 06:16:44,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 06:16:44,830 INFO L208 MainTranslator]: Completed translation [2022-07-23 06:16:44,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:16:44 WrapperNode [2022-07-23 06:16:44,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 06:16:44,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 06:16:44,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 06:16:44,833 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 06:16:44,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:16:44" (1/1) ... [2022-07-23 06:16:44,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:16:44" (1/1) ... [2022-07-23 06:16:44,895 INFO L137 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 234 [2022-07-23 06:16:44,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 06:16:44,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 06:16:44,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 06:16:44,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 06:16:44,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:16:44" (1/1) ... [2022-07-23 06:16:44,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:16:44" (1/1) ... [2022-07-23 06:16:44,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:16:44" (1/1) ... [2022-07-23 06:16:44,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:16:44" (1/1) ... [2022-07-23 06:16:44,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:16:44" (1/1) ... [2022-07-23 06:16:44,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:16:44" (1/1) ... [2022-07-23 06:16:44,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:16:44" (1/1) ... [2022-07-23 06:16:44,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 06:16:44,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 06:16:44,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 06:16:44,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 06:16:44,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:16:44" (1/1) ... [2022-07-23 06:16:44,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 06:16:44,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 06:16:44,988 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) [2022-07-23 06:16:45,013 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 [2022-07-23 06:16:45,036 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-07-23 06:16:45,037 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-07-23 06:16:45,037 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2022-07-23 06:16:45,037 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2022-07-23 06:16:45,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 06:16:45,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 06:16:45,037 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2022-07-23 06:16:45,038 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2022-07-23 06:16:45,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-23 06:16:45,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 06:16:45,038 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-23 06:16:45,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-23 06:16:45,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 06:16:45,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 06:16:45,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-23 06:16:45,039 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2022-07-23 06:16:45,039 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2022-07-23 06:16:45,039 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2022-07-23 06:16:45,047 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2022-07-23 06:16:45,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 06:16:45,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 06:16:45,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 06:16:45,145 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 06:16:45,146 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 06:16:45,649 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 06:16:45,661 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 06:16:45,661 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2022-07-23 06:16:45,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:16:45 BoogieIcfgContainer [2022-07-23 06:16:45,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 06:16:45,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 06:16:45,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 06:16:45,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 06:16:45,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 06:16:44" (1/3) ... [2022-07-23 06:16:45,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc2f7c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:16:45, skipping insertion in model container [2022-07-23 06:16:45,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:16:44" (2/3) ... [2022-07-23 06:16:45,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc2f7c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:16:45, skipping insertion in model container [2022-07-23 06:16:45,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:16:45" (3/3) ... [2022-07-23 06:16:45,672 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2022-07-23 06:16:45,682 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 06:16:45,683 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 98 error locations. [2022-07-23 06:16:45,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 06:16:45,740 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=FINITE_AUTOMATA, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3f5aa332, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1caf3d9d [2022-07-23 06:16:45,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 98 error locations. [2022-07-23 06:16:45,744 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) [2022-07-23 06:16:45,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-23 06:16:45,761 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:16:45,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:16:45,762 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)] === [2022-07-23 06:16:45,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:16:45,767 INFO L85 PathProgramCache]: Analyzing trace with hash -853608627, now seen corresponding path program 1 times [2022-07-23 06:16:45,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:16:45,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322333700] [2022-07-23 06:16:45,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:16:45,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:16:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:16:45,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:16:45,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 06:16:45,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322333700] [2022-07-23 06:16:45,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322333700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:16:45,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:16:45,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 06:16:45,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488633733] [2022-07-23 06:16:45,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:16:45,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-23 06:16:45,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 06:16:45,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-23 06:16:45,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 06:16:45,910 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) [2022-07-23 06:16:45,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:16:45,932 INFO L93 Difference]: Finished difference Result 269 states and 299 transitions. [2022-07-23 06:16:45,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-23 06:16:45,934 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 [2022-07-23 06:16:45,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:16:45,941 INFO L225 Difference]: With dead ends: 269 [2022-07-23 06:16:45,942 INFO L226 Difference]: Without dead ends: 267 [2022-07-23 06:16:45,943 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 [2022-07-23 06:16:45,945 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 [2022-07-23 06:16:45,946 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] [2022-07-23 06:16:45,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-07-23 06:16:45,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2022-07-23 06:16:45,978 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) [2022-07-23 06:16:45,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 297 transitions. [2022-07-23 06:16:45,983 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 297 transitions. Word has length 9 [2022-07-23 06:16:45,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:16:45,983 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 297 transitions. [2022-07-23 06:16:45,984 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) [2022-07-23 06:16:45,984 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 297 transitions. [2022-07-23 06:16:45,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-23 06:16:45,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:16:45,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:16:45,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-23 06:16:45,985 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)] === [2022-07-23 06:16:45,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:16:45,985 INFO L85 PathProgramCache]: Analyzing trace with hash -853608565, now seen corresponding path program 1 times [2022-07-23 06:16:45,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:16:45,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185549441] [2022-07-23 06:16:45,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:16:45,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:16:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:16:46,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:16:46,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 06:16:46,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185549441] [2022-07-23 06:16:46,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185549441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:16:46,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:16:46,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 06:16:46,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760179082] [2022-07-23 06:16:46,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:16:46,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 06:16:46,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 06:16:46,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 06:16:46,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 06:16:46,043 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) [2022-07-23 06:16:46,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:16:46,156 INFO L93 Difference]: Finished difference Result 267 states and 299 transitions. [2022-07-23 06:16:46,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 06:16:46,157 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 [2022-07-23 06:16:46,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:16:46,158 INFO L225 Difference]: With dead ends: 267 [2022-07-23 06:16:46,158 INFO L226 Difference]: Without dead ends: 267 [2022-07-23 06:16:46,159 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 [2022-07-23 06:16:46,160 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 [2022-07-23 06:16:46,175 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] [2022-07-23 06:16:46,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-07-23 06:16:46,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2022-07-23 06:16:46,187 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) [2022-07-23 06:16:46,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 295 transitions. [2022-07-23 06:16:46,190 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 295 transitions. Word has length 9 [2022-07-23 06:16:46,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:16:46,190 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 295 transitions. [2022-07-23 06:16:46,191 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) [2022-07-23 06:16:46,191 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 295 transitions. [2022-07-23 06:16:46,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-23 06:16:46,208 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:16:46,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:16:46,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-23 06:16:46,208 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)] === [2022-07-23 06:16:46,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:16:46,209 INFO L85 PathProgramCache]: Analyzing trace with hash -853608564, now seen corresponding path program 1 times [2022-07-23 06:16:46,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:16:46,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925304009] [2022-07-23 06:16:46,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:16:46,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:16:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:16:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:16:46,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 06:16:46,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925304009] [2022-07-23 06:16:46,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925304009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:16:46,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:16:46,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 06:16:46,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286416908] [2022-07-23 06:16:46,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:16:46,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 06:16:46,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 06:16:46,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 06:16:46,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 06:16:46,306 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) [2022-07-23 06:16:46,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:16:46,374 INFO L93 Difference]: Finished difference Result 291 states and 329 transitions. [2022-07-23 06:16:46,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 06:16:46,374 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 [2022-07-23 06:16:46,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:16:46,376 INFO L225 Difference]: With dead ends: 291 [2022-07-23 06:16:46,376 INFO L226 Difference]: Without dead ends: 291 [2022-07-23 06:16:46,376 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 [2022-07-23 06:16:46,377 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 19 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 06:16:46,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1205 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 06:16:46,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-07-23 06:16:46,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 283. [2022-07-23 06:16:46,386 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) [2022-07-23 06:16:46,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 323 transitions. [2022-07-23 06:16:46,388 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 323 transitions. Word has length 9 [2022-07-23 06:16:46,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:16:46,388 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 323 transitions. [2022-07-23 06:16:46,388 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) [2022-07-23 06:16:46,389 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 323 transitions. [2022-07-23 06:16:46,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-23 06:16:46,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:16:46,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:16:46,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-23 06:16:46,390 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)] === [2022-07-23 06:16:46,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:16:46,390 INFO L85 PathProgramCache]: Analyzing trace with hash 33414869, now seen corresponding path program 1 times [2022-07-23 06:16:46,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:16:46,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257407400] [2022-07-23 06:16:46,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:16:46,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:16:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:16:46,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:16:46,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 06:16:46,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257407400] [2022-07-23 06:16:46,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257407400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:16:46,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:16:46,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 06:16:46,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445192520] [2022-07-23 06:16:46,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:16:46,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 06:16:46,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 06:16:46,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 06:16:46,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 06:16:46,423 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) [2022-07-23 06:16:46,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:16:46,538 INFO L93 Difference]: Finished difference Result 280 states and 320 transitions. [2022-07-23 06:16:46,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 06:16:46,539 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 [2022-07-23 06:16:46,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:16:46,541 INFO L225 Difference]: With dead ends: 280 [2022-07-23 06:16:46,541 INFO L226 Difference]: Without dead ends: 280 [2022-07-23 06:16:46,541 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 [2022-07-23 06:16:46,550 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 [2022-07-23 06:16:46,552 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] [2022-07-23 06:16:46,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-07-23 06:16:46,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2022-07-23 06:16:46,565 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) [2022-07-23 06:16:46,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 320 transitions. [2022-07-23 06:16:46,567 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 320 transitions. Word has length 11 [2022-07-23 06:16:46,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:16:46,567 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 320 transitions. [2022-07-23 06:16:46,567 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) [2022-07-23 06:16:46,568 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 320 transitions. [2022-07-23 06:16:46,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-23 06:16:46,568 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:16:46,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:16:46,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-23 06:16:46,569 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)] === [2022-07-23 06:16:46,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:16:46,570 INFO L85 PathProgramCache]: Analyzing trace with hash 33414870, now seen corresponding path program 1 times [2022-07-23 06:16:46,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:16:46,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507839209] [2022-07-23 06:16:46,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:16:46,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:16:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:16:46,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:16:46,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 06:16:46,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507839209] [2022-07-23 06:16:46,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507839209] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:16:46,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:16:46,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 06:16:46,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506184463] [2022-07-23 06:16:46,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:16:46,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 06:16:46,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 06:16:46,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 06:16:46,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 06:16:46,639 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) [2022-07-23 06:16:46,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:16:46,741 INFO L93 Difference]: Finished difference Result 277 states and 317 transitions. [2022-07-23 06:16:46,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 06:16:46,741 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 [2022-07-23 06:16:46,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:16:46,743 INFO L225 Difference]: With dead ends: 277 [2022-07-23 06:16:46,743 INFO L226 Difference]: Without dead ends: 277 [2022-07-23 06:16:46,743 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 [2022-07-23 06:16:46,744 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 [2022-07-23 06:16:46,744 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] [2022-07-23 06:16:46,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-07-23 06:16:46,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2022-07-23 06:16:46,751 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) [2022-07-23 06:16:46,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 317 transitions. [2022-07-23 06:16:46,752 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 317 transitions. Word has length 11 [2022-07-23 06:16:46,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:16:46,753 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 317 transitions. [2022-07-23 06:16:46,753 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) [2022-07-23 06:16:46,753 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 317 transitions. [2022-07-23 06:16:46,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-23 06:16:46,754 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:16:46,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:16:46,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-23 06:16:46,754 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)] === [2022-07-23 06:16:46,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:16:46,755 INFO L85 PathProgramCache]: Analyzing trace with hash -226556130, now seen corresponding path program 1 times [2022-07-23 06:16:46,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:16:46,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103470170] [2022-07-23 06:16:46,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:16:46,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:16:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:16:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:16:46,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 06:16:46,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103470170] [2022-07-23 06:16:46,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103470170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:16:46,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:16:46,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 06:16:46,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721916713] [2022-07-23 06:16:46,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:16:46,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 06:16:46,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 06:16:46,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 06:16:46,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-23 06:16:46,843 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) [2022-07-23 06:16:47,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:16:47,140 INFO L93 Difference]: Finished difference Result 300 states and 343 transitions. [2022-07-23 06:16:47,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 06:16:47,140 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 [2022-07-23 06:16:47,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:16:47,141 INFO L225 Difference]: With dead ends: 300 [2022-07-23 06:16:47,142 INFO L226 Difference]: Without dead ends: 300 [2022-07-23 06:16:47,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-23 06:16:47,142 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 120 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 06:16:47,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1153 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 06:16:47,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-07-23 06:16:47,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 289. [2022-07-23 06:16:47,148 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) [2022-07-23 06:16:47,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 332 transitions. [2022-07-23 06:16:47,149 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 332 transitions. Word has length 16 [2022-07-23 06:16:47,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:16:47,149 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 332 transitions. [2022-07-23 06:16:47,150 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) [2022-07-23 06:16:47,150 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 332 transitions. [2022-07-23 06:16:47,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-23 06:16:47,150 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:16:47,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:16:47,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-23 06:16:47,151 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)] === [2022-07-23 06:16:47,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:16:47,151 INFO L85 PathProgramCache]: Analyzing trace with hash -226556129, now seen corresponding path program 1 times [2022-07-23 06:16:47,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:16:47,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281157365] [2022-07-23 06:16:47,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:16:47,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:16:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:16:47,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:16:47,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 06:16:47,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281157365] [2022-07-23 06:16:47,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281157365] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:16:47,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:16:47,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 06:16:47,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370857882] [2022-07-23 06:16:47,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:16:47,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 06:16:47,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 06:16:47,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 06:16:47,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-23 06:16:47,236 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) [2022-07-23 06:16:47,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:16:47,594 INFO L93 Difference]: Finished difference Result 299 states and 342 transitions. [2022-07-23 06:16:47,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 06:16:47,594 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 [2022-07-23 06:16:47,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:16:47,596 INFO L225 Difference]: With dead ends: 299 [2022-07-23 06:16:47,596 INFO L226 Difference]: Without dead ends: 299 [2022-07-23 06:16:47,596 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 [2022-07-23 06:16:47,596 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 80 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 06:16:47,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1016 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 06:16:47,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-07-23 06:16:47,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 289. [2022-07-23 06:16:47,602 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) [2022-07-23 06:16:47,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 330 transitions. [2022-07-23 06:16:47,604 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 330 transitions. Word has length 16 [2022-07-23 06:16:47,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:16:47,604 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 330 transitions. [2022-07-23 06:16:47,604 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) [2022-07-23 06:16:47,604 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 330 transitions. [2022-07-23 06:16:47,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-23 06:16:47,605 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:16:47,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:16:47,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-23 06:16:47,605 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)] === [2022-07-23 06:16:47,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:16:47,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1322891007, now seen corresponding path program 1 times [2022-07-23 06:16:47,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:16:47,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520958635] [2022-07-23 06:16:47,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:16:47,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:16:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:16:47,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:16:47,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 06:16:47,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520958635] [2022-07-23 06:16:47,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520958635] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:16:47,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:16:47,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 06:16:47,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380289223] [2022-07-23 06:16:47,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:16:47,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 06:16:47,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 06:16:47,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 06:16:47,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 06:16:47,641 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) [2022-07-23 06:16:47,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:16:47,794 INFO L93 Difference]: Finished difference Result 288 states and 329 transitions. [2022-07-23 06:16:47,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 06:16:47,795 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 [2022-07-23 06:16:47,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:16:47,796 INFO L225 Difference]: With dead ends: 288 [2022-07-23 06:16:47,796 INFO L226 Difference]: Without dead ends: 288 [2022-07-23 06:16:47,797 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 [2022-07-23 06:16:47,797 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 06:16:47,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 813 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 06:16:47,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-07-23 06:16:47,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2022-07-23 06:16:47,805 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) [2022-07-23 06:16:47,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 329 transitions. [2022-07-23 06:16:47,806 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 329 transitions. Word has length 18 [2022-07-23 06:16:47,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:16:47,806 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 329 transitions. [2022-07-23 06:16:47,807 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) [2022-07-23 06:16:47,807 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 329 transitions. [2022-07-23 06:16:47,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-23 06:16:47,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:16:47,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:16:47,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-23 06:16:47,808 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)] === [2022-07-23 06:16:47,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:16:47,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1322891008, now seen corresponding path program 1 times [2022-07-23 06:16:47,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:16:47,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435581143] [2022-07-23 06:16:47,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:16:47,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:16:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:16:47,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:16:47,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 06:16:47,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435581143] [2022-07-23 06:16:47,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435581143] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:16:47,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:16:47,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 06:16:47,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700475665] [2022-07-23 06:16:47,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:16:47,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 06:16:47,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 06:16:47,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 06:16:47,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-23 06:16:47,870 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) [2022-07-23 06:16:48,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:16:48,004 INFO L93 Difference]: Finished difference Result 287 states and 328 transitions. [2022-07-23 06:16:48,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 06:16:48,005 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 [2022-07-23 06:16:48,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:16:48,006 INFO L225 Difference]: With dead ends: 287 [2022-07-23 06:16:48,006 INFO L226 Difference]: Without dead ends: 287 [2022-07-23 06:16:48,006 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 [2022-07-23 06:16:48,007 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 55 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 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 [2022-07-23 06:16:48,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 914 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 06:16:48,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-07-23 06:16:48,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-07-23 06:16:48,011 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) [2022-07-23 06:16:48,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 328 transitions. [2022-07-23 06:16:48,013 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 328 transitions. Word has length 18 [2022-07-23 06:16:48,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:16:48,013 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 328 transitions. [2022-07-23 06:16:48,013 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) [2022-07-23 06:16:48,013 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 328 transitions. [2022-07-23 06:16:48,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-23 06:16:48,014 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:16:48,014 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] [2022-07-23 06:16:48,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-23 06:16:48,014 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)] === [2022-07-23 06:16:48,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:16:48,015 INFO L85 PathProgramCache]: Analyzing trace with hash -12061856, now seen corresponding path program 1 times [2022-07-23 06:16:48,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:16:48,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600354213] [2022-07-23 06:16:48,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:16:48,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:16:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:16:48,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:16:48,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 06:16:48,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600354213] [2022-07-23 06:16:48,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600354213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:16:48,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:16:48,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-23 06:16:48,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109107231] [2022-07-23 06:16:48,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:16:48,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-23 06:16:48,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 06:16:48,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-23 06:16:48,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-23 06:16:48,135 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) [2022-07-23 06:16:48,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:16:48,467 INFO L93 Difference]: Finished difference Result 326 states and 372 transitions. [2022-07-23 06:16:48,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 06:16:48,467 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 [2022-07-23 06:16:48,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:16:48,469 INFO L225 Difference]: With dead ends: 326 [2022-07-23 06:16:48,469 INFO L226 Difference]: Without dead ends: 326 [2022-07-23 06:16:48,469 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 [2022-07-23 06:16:48,469 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 45 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 06:16:48,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 1780 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 06:16:48,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-07-23 06:16:48,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 307. [2022-07-23 06:16:48,475 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) [2022-07-23 06:16:48,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 356 transitions. [2022-07-23 06:16:48,476 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 356 transitions. Word has length 20 [2022-07-23 06:16:48,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:16:48,476 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 356 transitions. [2022-07-23 06:16:48,476 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) [2022-07-23 06:16:48,477 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 356 transitions. [2022-07-23 06:16:48,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-23 06:16:48,477 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:16:48,477 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] [2022-07-23 06:16:48,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-23 06:16:48,477 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)] === [2022-07-23 06:16:48,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:16:48,478 INFO L85 PathProgramCache]: Analyzing trace with hash 551710607, now seen corresponding path program 1 times [2022-07-23 06:16:48,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:16:48,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240905763] [2022-07-23 06:16:48,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:16:48,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:16:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:16:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-23 06:16:48,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 06:16:48,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240905763] [2022-07-23 06:16:48,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240905763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:16:48,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:16:48,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 06:16:48,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959304012] [2022-07-23 06:16:48,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:16:48,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 06:16:48,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 06:16:48,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 06:16:48,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 06:16:48,516 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) [2022-07-23 06:16:48,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:16:48,600 INFO L93 Difference]: Finished difference Result 305 states and 354 transitions. [2022-07-23 06:16:48,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 06:16:48,601 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 [2022-07-23 06:16:48,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:16:48,602 INFO L225 Difference]: With dead ends: 305 [2022-07-23 06:16:48,602 INFO L226 Difference]: Without dead ends: 305 [2022-07-23 06:16:48,602 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 [2022-07-23 06:16:48,603 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 [2022-07-23 06:16:48,603 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] [2022-07-23 06:16:48,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-07-23 06:16:48,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2022-07-23 06:16:48,608 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) [2022-07-23 06:16:48,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 354 transitions. [2022-07-23 06:16:48,610 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 354 transitions. Word has length 27 [2022-07-23 06:16:48,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:16:48,610 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 354 transitions. [2022-07-23 06:16:48,610 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) [2022-07-23 06:16:48,610 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 354 transitions. [2022-07-23 06:16:48,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-23 06:16:48,611 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:16:48,611 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] [2022-07-23 06:16:48,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-23 06:16:48,611 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)] === [2022-07-23 06:16:48,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:16:48,612 INFO L85 PathProgramCache]: Analyzing trace with hash 67060467, now seen corresponding path program 1 times [2022-07-23 06:16:48,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:16:48,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447940391] [2022-07-23 06:16:48,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:16:48,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:16:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:16:48,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 06:16:48,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 06:16:48,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447940391] [2022-07-23 06:16:48,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447940391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:16:48,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:16:48,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 06:16:48,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172272332] [2022-07-23 06:16:48,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:16:48,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 06:16:48,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 06:16:48,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 06:16:48,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 06:16:48,693 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) [2022-07-23 06:16:48,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:16:48,984 INFO L93 Difference]: Finished difference Result 304 states and 353 transitions. [2022-07-23 06:16:48,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 06:16:48,985 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 [2022-07-23 06:16:48,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:16:48,986 INFO L225 Difference]: With dead ends: 304 [2022-07-23 06:16:48,986 INFO L226 Difference]: Without dead ends: 304 [2022-07-23 06:16:48,986 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 [2022-07-23 06:16:48,987 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 [2022-07-23 06:16:48,987 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] [2022-07-23 06:16:48,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-07-23 06:16:48,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 303. [2022-07-23 06:16:48,995 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) [2022-07-23 06:16:48,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 352 transitions. [2022-07-23 06:16:48,996 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 352 transitions. Word has length 31 [2022-07-23 06:16:48,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:16:48,997 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 352 transitions. [2022-07-23 06:16:48,997 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) [2022-07-23 06:16:48,997 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 352 transitions. [2022-07-23 06:16:49,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-23 06:16:49,002 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:16:49,002 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] [2022-07-23 06:16:49,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-23 06:16:49,003 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)] === [2022-07-23 06:16:49,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:16:49,003 INFO L85 PathProgramCache]: Analyzing trace with hash 67060466, now seen corresponding path program 1 times [2022-07-23 06:16:49,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:16:49,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286829441] [2022-07-23 06:16:49,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:16:49,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:16:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:16:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 06:16:49,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 06:16:49,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286829441] [2022-07-23 06:16:49,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286829441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:16:49,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:16:49,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 06:16:49,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619646406] [2022-07-23 06:16:49,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:16:49,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 06:16:49,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 06:16:49,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 06:16:49,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-23 06:16:49,076 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) [2022-07-23 06:16:49,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:16:49,270 INFO L93 Difference]: Finished difference Result 301 states and 350 transitions. [2022-07-23 06:16:49,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 06:16:49,271 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 [2022-07-23 06:16:49,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:16:49,272 INFO L225 Difference]: With dead ends: 301 [2022-07-23 06:16:49,272 INFO L226 Difference]: Without dead ends: 301 [2022-07-23 06:16:49,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-23 06:16:49,273 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 74 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 06:16:49,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 975 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 06:16:49,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-07-23 06:16:49,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2022-07-23 06:16:49,277 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) [2022-07-23 06:16:49,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 350 transitions. [2022-07-23 06:16:49,278 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 350 transitions. Word has length 31 [2022-07-23 06:16:49,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:16:49,279 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 350 transitions. [2022-07-23 06:16:49,279 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) [2022-07-23 06:16:49,279 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 350 transitions. [2022-07-23 06:16:49,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-23 06:16:49,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:16:49,280 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] [2022-07-23 06:16:49,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-23 06:16:49,280 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)] === [2022-07-23 06:16:49,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:16:49,281 INFO L85 PathProgramCache]: Analyzing trace with hash 20600531, now seen corresponding path program 1 times [2022-07-23 06:16:49,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:16:49,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836044543] [2022-07-23 06:16:49,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:16:49,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:16:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:16:49,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-23 06:16:49,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 06:16:49,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836044543] [2022-07-23 06:16:49,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836044543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:16:49,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:16:49,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 06:16:49,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341384440] [2022-07-23 06:16:49,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:16:49,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 06:16:49,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 06:16:49,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 06:16:49,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 06:16:49,320 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) [2022-07-23 06:16:49,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:16:49,465 INFO L93 Difference]: Finished difference Result 300 states and 349 transitions. [2022-07-23 06:16:49,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 06:16:49,466 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 [2022-07-23 06:16:49,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:16:49,467 INFO L225 Difference]: With dead ends: 300 [2022-07-23 06:16:49,467 INFO L226 Difference]: Without dead ends: 300 [2022-07-23 06:16:49,467 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 [2022-07-23 06:16:49,468 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 [2022-07-23 06:16:49,468 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] [2022-07-23 06:16:49,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-07-23 06:16:49,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2022-07-23 06:16:49,473 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) [2022-07-23 06:16:49,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 349 transitions. [2022-07-23 06:16:49,474 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 349 transitions. Word has length 33 [2022-07-23 06:16:49,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:16:49,474 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 349 transitions. [2022-07-23 06:16:49,474 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) [2022-07-23 06:16:49,474 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 349 transitions. [2022-07-23 06:16:49,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-23 06:16:49,475 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:16:49,475 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] [2022-07-23 06:16:49,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-23 06:16:49,476 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)] === [2022-07-23 06:16:49,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:16:49,476 INFO L85 PathProgramCache]: Analyzing trace with hash 20600532, now seen corresponding path program 1 times [2022-07-23 06:16:49,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:16:49,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856542768] [2022-07-23 06:16:49,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:16:49,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:16:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:16:49,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-23 06:16:49,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 06:16:49,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856542768] [2022-07-23 06:16:49,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856542768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:16:49,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:16:49,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 06:16:49,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306592822] [2022-07-23 06:16:49,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:16:49,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 06:16:49,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 06:16:49,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 06:16:49,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-23 06:16:49,542 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) [2022-07-23 06:16:49,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:16:49,695 INFO L93 Difference]: Finished difference Result 299 states and 348 transitions. [2022-07-23 06:16:49,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 06:16:49,695 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 [2022-07-23 06:16:49,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:16:49,696 INFO L225 Difference]: With dead ends: 299 [2022-07-23 06:16:49,696 INFO L226 Difference]: Without dead ends: 299 [2022-07-23 06:16:49,697 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 [2022-07-23 06:16:49,697 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 37 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 06:16:49,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1086 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 06:16:49,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-07-23 06:16:49,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-07-23 06:16:49,702 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) [2022-07-23 06:16:49,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 348 transitions. [2022-07-23 06:16:49,703 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 348 transitions. Word has length 33 [2022-07-23 06:16:49,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:16:49,703 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 348 transitions. [2022-07-23 06:16:49,703 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) [2022-07-23 06:16:49,703 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 348 transitions. [2022-07-23 06:16:49,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-23 06:16:49,704 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:16:49,704 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] [2022-07-23 06:16:49,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-23 06:16:49,704 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)] === [2022-07-23 06:16:49,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:16:49,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1677723852, now seen corresponding path program 1 times [2022-07-23 06:16:49,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:16:49,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749213551] [2022-07-23 06:16:49,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:16:49,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:16:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:16:49,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 06:16:49,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 06:16:49,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749213551] [2022-07-23 06:16:49,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749213551] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:16:49,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:16:49,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-23 06:16:49,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436414523] [2022-07-23 06:16:49,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:16:49,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 06:16:49,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 06:16:49,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 06:16:49,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-23 06:16:49,810 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) [2022-07-23 06:16:50,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:16:50,069 INFO L93 Difference]: Finished difference Result 313 states and 363 transitions. [2022-07-23 06:16:50,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 06:16:50,070 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 [2022-07-23 06:16:50,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:16:50,071 INFO L225 Difference]: With dead ends: 313 [2022-07-23 06:16:50,071 INFO L226 Difference]: Without dead ends: 313 [2022-07-23 06:16:50,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-07-23 06:16:50,072 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 24 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 06:16:50,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1587 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 06:16:50,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-07-23 06:16:50,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 312. [2022-07-23 06:16:50,076 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) [2022-07-23 06:16:50,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 362 transitions. [2022-07-23 06:16:50,077 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 362 transitions. Word has length 35 [2022-07-23 06:16:50,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:16:50,078 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 362 transitions. [2022-07-23 06:16:50,078 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) [2022-07-23 06:16:50,078 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 362 transitions. [2022-07-23 06:16:50,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-23 06:16:50,078 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:16:50,078 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] [2022-07-23 06:16:50,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-23 06:16:50,079 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)] === [2022-07-23 06:16:50,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:16:50,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1451018694, now seen corresponding path program 1 times [2022-07-23 06:16:50,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:16:50,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390631509] [2022-07-23 06:16:50,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:16:50,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:16:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:16:50,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-23 06:16:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:16:50,440 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-23 06:16:50,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 06:16:50,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390631509] [2022-07-23 06:16:50,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390631509] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 06:16:50,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950218982] [2022-07-23 06:16:50,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:16:50,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 06:16:50,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 06:16:50,444 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) [2022-07-23 06:16:50,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-23 06:16:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:16:50,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 61 conjunts are in the unsatisfiable core [2022-07-23 06:16:50,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:16:50,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-23 06:16:50,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-23 06:16:50,885 INFO L356 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2022-07-23 06:16:50,885 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 41 [2022-07-23 06:16:50,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 24 [2022-07-23 06:16:50,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 24 [2022-07-23 06:16:50,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 9 [2022-07-23 06:16:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-23 06:16:51,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 06:16:51,045 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_578 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$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 [2022-07-23 06:16:51,219 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-23 06:16:51,220 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 [2022-07-23 06:16:51,243 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 06:16:51,244 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-23 06:16:51,251 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 06:16:51,251 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 40 treesize of output 43 [2022-07-23 06:16:51,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-07-23 06:16:52,052 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 06:16:52,053 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 171 treesize of output 239 [2022-07-23 06:16:52,663 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 3 not checked. [2022-07-23 06:16:52,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950218982] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 06:16:52,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 06:16:52,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 13] total 34 [2022-07-23 06:16:52,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841203185] [2022-07-23 06:16:52,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 06:16:52,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-23 06:16:52,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 06:16:52,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-23 06:16:52,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1018, Unknown=4, NotChecked=64, Total=1190 [2022-07-23 06:16:52,666 INFO L87 Difference]: Start difference. First operand 312 states and 362 transitions. Second operand has 35 states, 30 states have (on average 2.6) internal successors, (78), 30 states have internal predecessors, (78), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 06:16:53,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:16:53,969 INFO L93 Difference]: Finished difference Result 334 states and 386 transitions. [2022-07-23 06:16:53,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-23 06:16:53,970 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 30 states have (on average 2.6) internal successors, (78), 30 states have internal predecessors, (78), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2022-07-23 06:16:53,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:16:53,971 INFO L225 Difference]: With dead ends: 334 [2022-07-23 06:16:53,971 INFO L226 Difference]: Without dead ends: 334 [2022-07-23 06:16:53,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 84 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=457, Invalid=2195, Unknown=4, NotChecked=100, Total=2756 [2022-07-23 06:16:53,972 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 239 mSDsluCounter, 2870 mSDsCounter, 0 mSdLazyCounter, 1730 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 3016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1226 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-23 06:16:53,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 3109 Invalid, 3016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1730 Invalid, 0 Unknown, 1226 Unchecked, 0.6s Time] [2022-07-23 06:16:53,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-07-23 06:16:53,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 328. [2022-07-23 06:16:53,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 206 states have (on average 1.5679611650485437) internal successors, (323), 303 states have internal predecessors, (323), 32 states have call successors, (32), 13 states have call predecessors, (32), 10 states have return successors, (24), 14 states have call predecessors, (24), 18 states have call successors, (24) [2022-07-23 06:16:53,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 379 transitions. [2022-07-23 06:16:53,978 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 379 transitions. Word has length 51 [2022-07-23 06:16:53,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:16:53,978 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 379 transitions. [2022-07-23 06:16:53,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 30 states have (on average 2.6) internal successors, (78), 30 states have internal predecessors, (78), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 06:16:53,978 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 379 transitions. [2022-07-23 06:16:53,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-23 06:16:53,978 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:16:53,979 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] [2022-07-23 06:16:54,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-23 06:16:54,179 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 [2022-07-23 06:16:54,180 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)] === [2022-07-23 06:16:54,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:16:54,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1451018695, now seen corresponding path program 1 times [2022-07-23 06:16:54,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:16:54,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674228393] [2022-07-23 06:16:54,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:16:54,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:16:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:16:54,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-23 06:16:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:16:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-23 06:16:54,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 06:16:54,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674228393] [2022-07-23 06:16:54,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674228393] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 06:16:54,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327938107] [2022-07-23 06:16:54,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:16:54,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 06:16:54,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 06:16:54,485 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) [2022-07-23 06:16:54,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-23 06:16:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:16:54,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 82 conjunts are in the unsatisfiable core [2022-07-23 06:16:54,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:16:54,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-23 06:16:54,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-23 06:16:54,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-23 06:16:54,990 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-07-23 06:16:54,991 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 [2022-07-23 06:16:54,998 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 18 [2022-07-23 06:16:55,040 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-07-23 06:16:55,048 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 24 [2022-07-23 06:16:55,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 24 [2022-07-23 06:16:55,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-23 06:16:55,101 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-23 06:16:55,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 9 [2022-07-23 06:16:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-23 06:16:55,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 06:16:55,252 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_769 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$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$~TO~VOID_dll_insert_slave_~dll#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$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 [2022-07-23 06:16:56,743 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-23 06:16:56,744 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 81 treesize of output 1 [2022-07-23 06:16:56,781 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 06:16:56,782 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 40 treesize of output 41 [2022-07-23 06:16:56,786 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 06:16:56,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 32 treesize of output 33 [2022-07-23 06:16:56,793 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 06:16:56,794 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 58 treesize of output 61 [2022-07-23 06:16:56,803 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 06:16:56,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 94 treesize of output 93 [2022-07-23 06:16:56,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 78 treesize of output 74 [2022-07-23 06:16:56,811 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2022-07-23 06:16:56,900 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 06:16:56,900 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-23 06:16:56,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 06:16:56,907 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 06:16:56,907 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-23 06:17:11,338 WARN L233 SmtUtils]: Spent 14.37s on a formula simplification. DAG size of input: 45 DAG size of output: 41 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-23 06:17:15,817 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 06:17:15,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 91 treesize of output 93 [2022-07-23 06:17:16,048 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 06:17:16,049 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 43 treesize of output 61 [2022-07-23 06:17:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 3 not checked. [2022-07-23 06:17:16,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327938107] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 06:17:16,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 06:17:16,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 14] total 40 [2022-07-23 06:17:16,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871966383] [2022-07-23 06:17:16,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 06:17:16,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-07-23 06:17:16,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 06:17:16,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-07-23 06:17:16,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1451, Unknown=4, NotChecked=76, Total=1640 [2022-07-23 06:17:16,115 INFO L87 Difference]: Start difference. First operand 328 states and 379 transitions. Second operand has 41 states, 36 states have (on average 2.611111111111111) internal successors, (94), 36 states have internal predecessors, (94), 5 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 06:17:22,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:17:22,166 INFO L93 Difference]: Finished difference Result 342 states and 397 transitions. [2022-07-23 06:17:22,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-23 06:17:22,166 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 36 states have (on average 2.611111111111111) internal successors, (94), 36 states have internal predecessors, (94), 5 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2022-07-23 06:17:22,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:17:22,168 INFO L225 Difference]: With dead ends: 342 [2022-07-23 06:17:22,168 INFO L226 Difference]: Without dead ends: 342 [2022-07-23 06:17:22,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 81 SyntacticMatches, 8 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 25.5s TimeCoverageRelationStatistics Valid=683, Invalid=3739, Unknown=4, NotChecked=130, Total=4556 [2022-07-23 06:17:22,169 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 360 mSDsluCounter, 3138 mSDsCounter, 0 mSdLazyCounter, 2573 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 3375 SdHoareTripleChecker+Invalid, 4044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1321 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-23 06:17:22,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 3375 Invalid, 4044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 2573 Invalid, 0 Unknown, 1321 Unchecked, 1.1s Time] [2022-07-23 06:17:22,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-07-23 06:17:22,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 327. [2022-07-23 06:17:22,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 206 states have (on average 1.558252427184466) internal successors, (321), 302 states have internal predecessors, (321), 32 states have call successors, (32), 13 states have call predecessors, (32), 10 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2022-07-23 06:17:22,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 376 transitions. [2022-07-23 06:17:22,175 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 376 transitions. Word has length 51 [2022-07-23 06:17:22,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:17:22,175 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 376 transitions. [2022-07-23 06:17:22,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 36 states have (on average 2.611111111111111) internal successors, (94), 36 states have internal predecessors, (94), 5 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 06:17:22,176 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 376 transitions. [2022-07-23 06:17:22,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-23 06:17:22,176 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:17:22,176 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 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] [2022-07-23 06:17:22,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-23 06:17:22,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-23 06:17:22,396 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting dll_insert_masterErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-07-23 06:17:22,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:17:22,396 INFO L85 PathProgramCache]: Analyzing trace with hash -470108245, now seen corresponding path program 1 times [2022-07-23 06:17:22,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:17:22,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48124307] [2022-07-23 06:17:22,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:17:22,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:17:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:17:22,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-23 06:17:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:17:22,500 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 06:17:22,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 06:17:22,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48124307] [2022-07-23 06:17:22,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48124307] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 06:17:22,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61334384] [2022-07-23 06:17:22,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:17:22,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 06:17:22,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 06:17:22,505 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 06:17:22,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-23 06:17:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:17:22,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 06:17:22,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:17:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-23 06:17:22,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:17:22,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61334384] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:17:22,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 06:17:22,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2022-07-23 06:17:22,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557991566] [2022-07-23 06:17:22,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:17:22,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 06:17:22,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 06:17:22,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 06:17:22,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 06:17:22,690 INFO L87 Difference]: Start difference. First operand 327 states and 376 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:17:22,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:17:22,716 INFO L93 Difference]: Finished difference Result 313 states and 349 transitions. [2022-07-23 06:17:22,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 06:17:22,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2022-07-23 06:17:22,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:17:22,718 INFO L225 Difference]: With dead ends: 313 [2022-07-23 06:17:22,718 INFO L226 Difference]: Without dead ends: 313 [2022-07-23 06:17:22,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 06:17:22,719 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 29 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 06:17:22,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 1081 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 06:17:22,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-07-23 06:17:22,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2022-07-23 06:17:22,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 195 states have (on average 1.558974358974359) internal successors, (304), 291 states have internal predecessors, (304), 29 states have call successors, (29), 12 states have call predecessors, (29), 10 states have return successors, (16), 12 states have call predecessors, (16), 15 states have call successors, (16) [2022-07-23 06:17:22,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 349 transitions. [2022-07-23 06:17:22,724 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 349 transitions. Word has length 54 [2022-07-23 06:17:22,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:17:22,724 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 349 transitions. [2022-07-23 06:17:22,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:17:22,724 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 349 transitions. [2022-07-23 06:17:22,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-23 06:17:22,725 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:17:22,725 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-07-23 06:17:22,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-23 06:17:22,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 06:17:22,944 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting dll_insert_masterErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-07-23 06:17:22,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:17:22,944 INFO L85 PathProgramCache]: Analyzing trace with hash -996489836, now seen corresponding path program 1 times [2022-07-23 06:17:22,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:17:22,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048858707] [2022-07-23 06:17:22,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:17:22,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:17:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:17:23,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 06:17:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:17:23,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-23 06:17:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:17:23,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 06:17:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:17:23,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-23 06:17:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:17:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-23 06:17:23,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 06:17:23,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048858707] [2022-07-23 06:17:23,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048858707] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 06:17:23,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432576427] [2022-07-23 06:17:23,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:17:23,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 06:17:23,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 06:17:23,450 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 06:17:23,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-23 06:17:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:17:23,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-23 06:17:23,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:17:23,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-23 06:17:23,736 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 8 treesize of output 4 [2022-07-23 06:17:24,146 WARN L855 $PredicateComparison]: unable to prove that (exists ((|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int) (v_ArrVal_1295 (Array Int Int))) (and (< |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| |c_#StackHeapBarrier|) (= |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~next~0#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_1295) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|)))) is different from true [2022-07-23 06:17:24,172 WARN L855 $PredicateComparison]: unable to prove that (exists ((|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int) (v_ArrVal_1295 (Array Int Int))) (and (< |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_1295) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|) 0))) is different from true [2022-07-23 06:17:24,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:17:24,188 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 5 not checked. [2022-07-23 06:17:24,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 06:17:24,535 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1318 (Array Int Int)) (|v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_40| Int)) (or (not (< |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_40| |c_#StackHeapBarrier|)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_40| v_ArrVal_1318) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|) 0)))) is different from false [2022-07-23 06:17:24,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432576427] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 06:17:24,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 06:17:24,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 32 [2022-07-23 06:17:24,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207434794] [2022-07-23 06:17:24,537 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 06:17:24,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-23 06:17:24,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 06:17:24,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-23 06:17:24,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=792, Unknown=9, NotChecked=174, Total=1056 [2022-07-23 06:17:24,538 INFO L87 Difference]: Start difference. First operand 313 states and 349 transitions. Second operand has 32 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 28 states have internal predecessors, (76), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-23 06:17:25,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:17:25,738 INFO L93 Difference]: Finished difference Result 333 states and 373 transitions. [2022-07-23 06:17:25,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-23 06:17:25,738 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 28 states have internal predecessors, (76), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 64 [2022-07-23 06:17:25,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:17:25,739 INFO L225 Difference]: With dead ends: 333 [2022-07-23 06:17:25,740 INFO L226 Difference]: Without dead ends: 329 [2022-07-23 06:17:25,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=197, Invalid=1869, Unknown=16, NotChecked=270, Total=2352 [2022-07-23 06:17:25,740 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 122 mSDsluCounter, 3487 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 3718 SdHoareTripleChecker+Invalid, 3123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1238 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-23 06:17:25,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 3718 Invalid, 3123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1826 Invalid, 0 Unknown, 1238 Unchecked, 0.7s Time] [2022-07-23 06:17:25,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-07-23 06:17:25,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 313. [2022-07-23 06:17:25,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 195 states have (on average 1.5538461538461539) internal successors, (303), 291 states have internal predecessors, (303), 29 states have call successors, (29), 12 states have call predecessors, (29), 10 states have return successors, (16), 12 states have call predecessors, (16), 15 states have call successors, (16) [2022-07-23 06:17:25,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 348 transitions. [2022-07-23 06:17:25,747 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 348 transitions. Word has length 64 [2022-07-23 06:17:25,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:17:25,748 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 348 transitions. [2022-07-23 06:17:25,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 28 states have internal predecessors, (76), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-23 06:17:25,748 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 348 transitions. [2022-07-23 06:17:25,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-23 06:17:25,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:17:25,748 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:17:25,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-23 06:17:25,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 06:17:25,967 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting dll_insert_masterErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-07-23 06:17:25,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:17:25,967 INFO L85 PathProgramCache]: Analyzing trace with hash 2033150353, now seen corresponding path program 1 times [2022-07-23 06:17:25,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:17:25,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674758355] [2022-07-23 06:17:25,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:17:25,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:17:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:17:26,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 06:17:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:17:26,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-23 06:17:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:17:26,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 06:17:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:17:27,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-23 06:17:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:17:27,781 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 06:17:27,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 06:17:27,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674758355] [2022-07-23 06:17:27,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674758355] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 06:17:27,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858320392] [2022-07-23 06:17:27,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:17:27,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 06:17:27,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 06:17:27,797 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 06:17:27,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-23 06:17:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:17:28,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 75 conjunts are in the unsatisfiable core [2022-07-23 06:17:28,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:17:28,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-23 06:17:28,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-23 06:17:28,491 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-07-23 06:17:28,491 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 31 [2022-07-23 06:17:28,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 8 [2022-07-23 06:17:28,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 44 treesize of output 32 [2022-07-23 06:17:29,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:17:29,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:17:29,107 INFO L356 Elim1Store]: treesize reduction 100, result has 23.1 percent of original size [2022-07-23 06:17:29,108 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 53 treesize of output 69 [2022-07-23 06:17:29,116 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:17:29,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 06:17:29,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858320392] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 06:17:29,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 06:17:29,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 19] total 43 [2022-07-23 06:17:29,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100963398] [2022-07-23 06:17:29,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 06:17:29,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-23 06:17:29,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 06:17:29,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-23 06:17:29,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1797, Unknown=13, NotChecked=0, Total=1980 [2022-07-23 06:17:29,584 INFO L87 Difference]: Start difference. First operand 313 states and 348 transitions. Second operand has 44 states, 39 states have (on average 2.5384615384615383) internal successors, (99), 39 states have internal predecessors, (99), 8 states have call successors, (11), 4 states have call predecessors, (11), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-23 06:17:32,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:17:32,794 INFO L93 Difference]: Finished difference Result 347 states and 386 transitions. [2022-07-23 06:17:32,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-23 06:17:32,795 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 39 states have (on average 2.5384615384615383) internal successors, (99), 39 states have internal predecessors, (99), 8 states have call successors, (11), 4 states have call predecessors, (11), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 65 [2022-07-23 06:17:32,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:17:32,796 INFO L225 Difference]: With dead ends: 347 [2022-07-23 06:17:32,796 INFO L226 Difference]: Without dead ends: 347 [2022-07-23 06:17:32,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=350, Invalid=3776, Unknown=34, NotChecked=0, Total=4160 [2022-07-23 06:17:32,798 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 257 mSDsluCounter, 2709 mSDsCounter, 0 mSdLazyCounter, 3300 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 2927 SdHoareTripleChecker+Invalid, 4020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 3300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 643 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-23 06:17:32,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 2927 Invalid, 4020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 3300 Invalid, 0 Unknown, 643 Unchecked, 1.9s Time] [2022-07-23 06:17:32,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-07-23 06:17:32,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 324. [2022-07-23 06:17:32,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 204 states have (on average 1.5441176470588236) internal successors, (315), 298 states have internal predecessors, (315), 29 states have call successors, (29), 12 states have call predecessors, (29), 12 states have return successors, (19), 16 states have call predecessors, (19), 15 states have call successors, (19) [2022-07-23 06:17:32,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 363 transitions. [2022-07-23 06:17:32,803 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 363 transitions. Word has length 65 [2022-07-23 06:17:32,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:17:32,804 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 363 transitions. [2022-07-23 06:17:32,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 39 states have (on average 2.5384615384615383) internal successors, (99), 39 states have internal predecessors, (99), 8 states have call successors, (11), 4 states have call predecessors, (11), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-23 06:17:32,804 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 363 transitions. [2022-07-23 06:17:32,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-23 06:17:32,804 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:17:32,804 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:17:32,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-23 06:17:33,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 06:17:33,024 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting dll_insert_masterErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-07-23 06:17:33,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:17:33,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2033150354, now seen corresponding path program 1 times [2022-07-23 06:17:33,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:17:33,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497715690] [2022-07-23 06:17:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:17:33,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:17:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:17:33,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 06:17:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:17:33,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-23 06:17:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:17:46,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 06:17:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:17:47,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-23 06:17:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:17:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 06:17:48,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 06:17:48,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497715690] [2022-07-23 06:17:48,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497715690] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 06:17:48,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303899556] [2022-07-23 06:17:48,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:17:48,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 06:17:48,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 06:17:48,150 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 06:17:48,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-23 06:17:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:17:48,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 93 conjunts are in the unsatisfiable core [2022-07-23 06:17:48,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:17:48,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-23 06:17:48,555 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-23 06:17:48,872 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-23 06:17:48,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 24 [2022-07-23 06:17:49,002 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 16 [2022-07-23 06:17:49,634 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 44 treesize of output 32 [2022-07-23 06:18:07,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:18:07,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:18:07,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:18:07,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:18:07,888 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-07-23 06:18:07,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2022-07-23 06:18:07,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:18:07,912 INFO L356 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-07-23 06:18:07,912 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 42 treesize of output 52 [2022-07-23 06:18:07,975 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:18:07,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 06:18:20,629 WARN L233 SmtUtils]: Spent 12.04s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-23 06:18:20,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303899556] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 06:18:20,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 06:18:20,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24] total 47 [2022-07-23 06:18:20,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197640207] [2022-07-23 06:18:20,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 06:18:20,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-07-23 06:18:20,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 06:18:20,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-07-23 06:18:20,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2212, Unknown=37, NotChecked=0, Total=2450 [2022-07-23 06:18:20,631 INFO L87 Difference]: Start difference. First operand 324 states and 363 transitions. Second operand has 48 states, 43 states have (on average 2.395348837209302) internal successors, (103), 41 states have internal predecessors, (103), 9 states have call successors, (11), 4 states have call predecessors, (11), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-23 06:19:12,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:19:12,913 INFO L93 Difference]: Finished difference Result 335 states and 376 transitions. [2022-07-23 06:19:12,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-23 06:19:12,914 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 43 states have (on average 2.395348837209302) internal successors, (103), 41 states have internal predecessors, (103), 9 states have call successors, (11), 4 states have call predecessors, (11), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Word has length 65 [2022-07-23 06:19:12,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:19:12,915 INFO L225 Difference]: With dead ends: 335 [2022-07-23 06:19:12,915 INFO L226 Difference]: Without dead ends: 335 [2022-07-23 06:19:12,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 57 SyntacticMatches, 4 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 82.6s TimeCoverageRelationStatistics Valid=393, Invalid=4220, Unknown=79, NotChecked=0, Total=4692 [2022-07-23 06:19:12,917 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 226 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 2838 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 2374 SdHoareTripleChecker+Invalid, 3953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1052 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-23 06:19:12,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 2374 Invalid, 3953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2838 Invalid, 0 Unknown, 1052 Unchecked, 1.9s Time] [2022-07-23 06:19:12,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-07-23 06:19:12,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 324. [2022-07-23 06:19:12,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 204 states have (on average 1.5343137254901962) internal successors, (313), 298 states have internal predecessors, (313), 29 states have call successors, (29), 12 states have call predecessors, (29), 12 states have return successors, (19), 16 states have call predecessors, (19), 15 states have call successors, (19) [2022-07-23 06:19:12,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 361 transitions. [2022-07-23 06:19:12,922 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 361 transitions. Word has length 65 [2022-07-23 06:19:12,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:19:12,922 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 361 transitions. [2022-07-23 06:19:12,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 43 states have (on average 2.395348837209302) internal successors, (103), 41 states have internal predecessors, (103), 9 states have call successors, (11), 4 states have call predecessors, (11), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-23 06:19:12,922 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 361 transitions. [2022-07-23 06:19:12,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-23 06:19:12,922 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:19:12,923 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:19:12,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-23 06:19:13,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 06:19:13,142 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting dll_insert_masterErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-07-23 06:19:13,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:19:13,143 INFO L85 PathProgramCache]: Analyzing trace with hash -352630062, now seen corresponding path program 1 times [2022-07-23 06:19:13,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 06:19:13,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177973703] [2022-07-23 06:19:13,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:19:13,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 06:19:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:19:13,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 06:19:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:19:13,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-23 06:19:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat