./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 eb692b52 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-?-eb692b5 [2022-07-20 06:02:54,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 06:02:54,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 06:02:54,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 06:02:54,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 06:02:54,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 06:02:54,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 06:02:54,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 06:02:54,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 06:02:54,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 06:02:54,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 06:02:54,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 06:02:54,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 06:02:54,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 06:02:54,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 06:02:54,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 06:02:54,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 06:02:54,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 06:02:54,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 06:02:54,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 06:02:54,597 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 06:02:54,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 06:02:54,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 06:02:54,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 06:02:54,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 06:02:54,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 06:02:54,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 06:02:54,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 06:02:54,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 06:02:54,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 06:02:54,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 06:02:54,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 06:02:54,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 06:02:54,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 06:02:54,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 06:02:54,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 06:02:54,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 06:02:54,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 06:02:54,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 06:02:54,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 06:02:54,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 06:02:54,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 06:02:54,610 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-20 06:02:54,631 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 06:02:54,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 06:02:54,632 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 06:02:54,632 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 06:02:54,633 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 06:02:54,633 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 06:02:54,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 06:02:54,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 06:02:54,634 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 06:02:54,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 06:02:54,634 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 06:02:54,634 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-20 06:02:54,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 06:02:54,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 06:02:54,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 06:02:54,635 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-20 06:02:54,635 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-20 06:02:54,635 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-20 06:02:54,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 06:02:54,636 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 06:02:54,636 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 06:02:54,636 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 06:02:54,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 06:02:54,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 06:02:54,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 06:02:54,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 06:02:54,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 06:02:54,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 06:02:54,637 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 06:02:54,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 06:02:54,637 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 [2022-07-20 06:02:54,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 06:02:54,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 06:02:54,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 06:02:54,830 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 06:02:54,830 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 06:02:54,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2022-07-20 06:02:54,870 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/586aab3cc/fd084c783aaf4221b3ba68d77f643c5f/FLAGb48b1b37f [2022-07-20 06:02:55,206 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 06:02:55,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2022-07-20 06:02:55,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/586aab3cc/fd084c783aaf4221b3ba68d77f643c5f/FLAGb48b1b37f [2022-07-20 06:02:55,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/586aab3cc/fd084c783aaf4221b3ba68d77f643c5f [2022-07-20 06:02:55,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 06:02:55,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 06:02:55,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 06:02:55,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 06:02:55,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 06:02:55,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:02:55" (1/1) ... [2022-07-20 06:02:55,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e08275c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:55, skipping insertion in model container [2022-07-20 06:02:55,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:02:55" (1/1) ... [2022-07-20 06:02:55,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 06:02:55,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 06:02:55,892 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] [2022-07-20 06:02:55,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 06:02:55,955 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 06:02:55,979 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] [2022-07-20 06:02:55,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 06:02:56,008 INFO L208 MainTranslator]: Completed translation [2022-07-20 06:02:56,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:56 WrapperNode [2022-07-20 06:02:56,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 06:02:56,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 06:02:56,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 06:02:56,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 06:02:56,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:56" (1/1) ... [2022-07-20 06:02:56,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:56" (1/1) ... [2022-07-20 06:02:56,041 INFO L137 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 234 [2022-07-20 06:02:56,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 06:02:56,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 06:02:56,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 06:02:56,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 06:02:56,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:56" (1/1) ... [2022-07-20 06:02:56,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:56" (1/1) ... [2022-07-20 06:02:56,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:56" (1/1) ... [2022-07-20 06:02:56,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:56" (1/1) ... [2022-07-20 06:02:56,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:56" (1/1) ... [2022-07-20 06:02:56,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:56" (1/1) ... [2022-07-20 06:02:56,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:56" (1/1) ... [2022-07-20 06:02:56,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 06:02:56,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 06:02:56,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 06:02:56,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 06:02:56,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:56" (1/1) ... [2022-07-20 06:02:56,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 06:02:56,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 06:02:56,106 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) [2022-07-20 06:02:56,111 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 [2022-07-20 06:02:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-07-20 06:02:56,136 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-07-20 06:02:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2022-07-20 06:02:56,136 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2022-07-20 06:02:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 06:02:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 06:02:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2022-07-20 06:02:56,137 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2022-07-20 06:02:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 06:02:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 06:02:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-20 06:02:56,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-20 06:02:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 06:02:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 06:02:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-20 06:02:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2022-07-20 06:02:56,138 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2022-07-20 06:02:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2022-07-20 06:02:56,138 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2022-07-20 06:02:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 06:02:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 06:02:56,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 06:02:56,250 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 06:02:56,258 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 06:02:56,682 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 06:02:56,692 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 06:02:56,692 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2022-07-20 06:02:56,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:02:56 BoogieIcfgContainer [2022-07-20 06:02:56,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 06:02:56,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 06:02:56,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 06:02:56,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 06:02:56,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:02:55" (1/3) ... [2022-07-20 06:02:56,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c64efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:02:56, skipping insertion in model container [2022-07-20 06:02:56,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:02:56" (2/3) ... [2022-07-20 06:02:56,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c64efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:02:56, skipping insertion in model container [2022-07-20 06:02:56,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:02:56" (3/3) ... [2022-07-20 06:02:56,702 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2022-07-20 06:02:56,712 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 06:02:56,712 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 98 error locations. [2022-07-20 06:02:56,760 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 06:02:56,764 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@19ee96ab, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6f007fb0 [2022-07-20 06:02:56,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 98 error locations. [2022-07-20 06:02:56,768 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) [2022-07-20 06:02:56,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-20 06:02:56,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:02:56,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:02:56,775 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)] === [2022-07-20 06:02:56,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:02:56,780 INFO L85 PathProgramCache]: Analyzing trace with hash -853608627, now seen corresponding path program 1 times [2022-07-20 06:02:56,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:02:56,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873912746] [2022-07-20 06:02:56,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:02:56,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:02:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:02:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:02:56,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:02:56,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873912746] [2022-07-20 06:02:56,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873912746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:02:56,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:02:56,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 06:02:56,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522642059] [2022-07-20 06:02:56,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:02:56,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-20 06:02:56,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:02:56,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-20 06:02:56,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-20 06:02:56,980 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) [2022-07-20 06:02:57,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:02:57,024 INFO L93 Difference]: Finished difference Result 269 states and 299 transitions. [2022-07-20 06:02:57,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-20 06:02:57,026 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 [2022-07-20 06:02:57,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:02:57,041 INFO L225 Difference]: With dead ends: 269 [2022-07-20 06:02:57,042 INFO L226 Difference]: Without dead ends: 267 [2022-07-20 06:02:57,044 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 [2022-07-20 06:02:57,048 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 [2022-07-20 06:02:57,050 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] [2022-07-20 06:02:57,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-07-20 06:02:57,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2022-07-20 06:02:57,105 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) [2022-07-20 06:02:57,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 297 transitions. [2022-07-20 06:02:57,113 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 297 transitions. Word has length 9 [2022-07-20 06:02:57,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:02:57,114 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 297 transitions. [2022-07-20 06:02:57,115 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) [2022-07-20 06:02:57,115 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 297 transitions. [2022-07-20 06:02:57,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-20 06:02:57,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:02:57,116 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:02:57,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 06:02:57,116 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)] === [2022-07-20 06:02:57,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:02:57,117 INFO L85 PathProgramCache]: Analyzing trace with hash -853608565, now seen corresponding path program 1 times [2022-07-20 06:02:57,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:02:57,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380284837] [2022-07-20 06:02:57,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:02:57,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:02:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:02:57,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:02:57,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:02:57,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380284837] [2022-07-20 06:02:57,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380284837] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:02:57,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:02:57,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 06:02:57,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986001540] [2022-07-20 06:02:57,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:02:57,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:02:57,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:02:57,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:02:57,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:02:57,195 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) [2022-07-20 06:02:57,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:02:57,346 INFO L93 Difference]: Finished difference Result 267 states and 299 transitions. [2022-07-20 06:02:57,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:02:57,347 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 [2022-07-20 06:02:57,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:02:57,348 INFO L225 Difference]: With dead ends: 267 [2022-07-20 06:02:57,348 INFO L226 Difference]: Without dead ends: 267 [2022-07-20 06:02:57,348 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 [2022-07-20 06:02:57,349 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 [2022-07-20 06:02:57,349 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] [2022-07-20 06:02:57,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-07-20 06:02:57,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2022-07-20 06:02:57,355 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) [2022-07-20 06:02:57,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 295 transitions. [2022-07-20 06:02:57,356 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 295 transitions. Word has length 9 [2022-07-20 06:02:57,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:02:57,356 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 295 transitions. [2022-07-20 06:02:57,356 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) [2022-07-20 06:02:57,356 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 295 transitions. [2022-07-20 06:02:57,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-20 06:02:57,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:02:57,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:02:57,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 06:02:57,357 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)] === [2022-07-20 06:02:57,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:02:57,357 INFO L85 PathProgramCache]: Analyzing trace with hash -853608564, now seen corresponding path program 1 times [2022-07-20 06:02:57,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:02:57,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770600981] [2022-07-20 06:02:57,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:02:57,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:02:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:02:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:02:57,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:02:57,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770600981] [2022-07-20 06:02:57,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770600981] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:02:57,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:02:57,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 06:02:57,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503397614] [2022-07-20 06:02:57,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:02:57,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 06:02:57,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:02:57,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 06:02:57,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 06:02:57,450 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) [2022-07-20 06:02:57,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:02:57,527 INFO L93 Difference]: Finished difference Result 291 states and 329 transitions. [2022-07-20 06:02:57,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 06:02:57,527 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 [2022-07-20 06:02:57,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:02:57,529 INFO L225 Difference]: With dead ends: 291 [2022-07-20 06:02:57,529 INFO L226 Difference]: Without dead ends: 291 [2022-07-20 06:02:57,529 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 [2022-07-20 06:02:57,534 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:02:57,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1205 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:02:57,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-07-20 06:02:57,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 283. [2022-07-20 06:02:57,545 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) [2022-07-20 06:02:57,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 323 transitions. [2022-07-20 06:02:57,546 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 323 transitions. Word has length 9 [2022-07-20 06:02:57,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:02:57,547 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 323 transitions. [2022-07-20 06:02:57,547 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) [2022-07-20 06:02:57,547 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 323 transitions. [2022-07-20 06:02:57,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-20 06:02:57,547 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:02:57,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:02:57,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-20 06:02:57,547 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)] === [2022-07-20 06:02:57,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:02:57,548 INFO L85 PathProgramCache]: Analyzing trace with hash 33414869, now seen corresponding path program 1 times [2022-07-20 06:02:57,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:02:57,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632218528] [2022-07-20 06:02:57,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:02:57,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:02:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:02:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:02:57,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:02:57,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632218528] [2022-07-20 06:02:57,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632218528] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:02:57,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:02:57,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 06:02:57,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465163819] [2022-07-20 06:02:57,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:02:57,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:02:57,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:02:57,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:02:57,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:02:57,609 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) [2022-07-20 06:02:57,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:02:57,694 INFO L93 Difference]: Finished difference Result 280 states and 320 transitions. [2022-07-20 06:02:57,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:02:57,695 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 [2022-07-20 06:02:57,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:02:57,696 INFO L225 Difference]: With dead ends: 280 [2022-07-20 06:02:57,696 INFO L226 Difference]: Without dead ends: 280 [2022-07-20 06:02:57,696 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 [2022-07-20 06:02:57,697 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 [2022-07-20 06:02:57,697 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] [2022-07-20 06:02:57,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-07-20 06:02:57,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2022-07-20 06:02:57,702 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) [2022-07-20 06:02:57,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 320 transitions. [2022-07-20 06:02:57,703 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 320 transitions. Word has length 11 [2022-07-20 06:02:57,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:02:57,703 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 320 transitions. [2022-07-20 06:02:57,703 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) [2022-07-20 06:02:57,703 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 320 transitions. [2022-07-20 06:02:57,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-20 06:02:57,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:02:57,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:02:57,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-20 06:02:57,704 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)] === [2022-07-20 06:02:57,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:02:57,704 INFO L85 PathProgramCache]: Analyzing trace with hash 33414870, now seen corresponding path program 1 times [2022-07-20 06:02:57,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:02:57,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276893842] [2022-07-20 06:02:57,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:02:57,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:02:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:02:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:02:57,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:02:57,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276893842] [2022-07-20 06:02:57,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276893842] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:02:57,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:02:57,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 06:02:57,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165980390] [2022-07-20 06:02:57,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:02:57,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:02:57,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:02:57,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:02:57,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:02:57,756 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) [2022-07-20 06:02:57,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:02:57,848 INFO L93 Difference]: Finished difference Result 277 states and 317 transitions. [2022-07-20 06:02:57,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:02:57,849 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 [2022-07-20 06:02:57,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:02:57,850 INFO L225 Difference]: With dead ends: 277 [2022-07-20 06:02:57,850 INFO L226 Difference]: Without dead ends: 277 [2022-07-20 06:02:57,850 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 [2022-07-20 06:02:57,851 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 [2022-07-20 06:02:57,851 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] [2022-07-20 06:02:57,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-07-20 06:02:57,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2022-07-20 06:02:57,855 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) [2022-07-20 06:02:57,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 317 transitions. [2022-07-20 06:02:57,857 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 317 transitions. Word has length 11 [2022-07-20 06:02:57,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:02:57,857 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 317 transitions. [2022-07-20 06:02:57,857 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) [2022-07-20 06:02:57,857 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 317 transitions. [2022-07-20 06:02:57,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-20 06:02:57,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:02:57,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:02:57,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-20 06:02:57,858 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)] === [2022-07-20 06:02:57,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:02:57,859 INFO L85 PathProgramCache]: Analyzing trace with hash -226556130, now seen corresponding path program 1 times [2022-07-20 06:02:57,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:02:57,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920447501] [2022-07-20 06:02:57,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:02:57,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:02:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:02:57,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:02:57,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:02:57,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920447501] [2022-07-20 06:02:57,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920447501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:02:57,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:02:57,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 06:02:57,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165810387] [2022-07-20 06:02:57,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:02:57,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 06:02:57,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:02:57,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 06:02:57,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-20 06:02:57,927 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) [2022-07-20 06:02:58,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:02:58,212 INFO L93 Difference]: Finished difference Result 300 states and 343 transitions. [2022-07-20 06:02:58,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 06:02:58,213 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 [2022-07-20 06:02:58,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:02:58,214 INFO L225 Difference]: With dead ends: 300 [2022-07-20 06:02:58,214 INFO L226 Difference]: Without dead ends: 300 [2022-07-20 06:02:58,214 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 [2022-07-20 06:02:58,215 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 [2022-07-20 06:02:58,215 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] [2022-07-20 06:02:58,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-07-20 06:02:58,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 289. [2022-07-20 06:02:58,220 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) [2022-07-20 06:02:58,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 332 transitions. [2022-07-20 06:02:58,222 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 332 transitions. Word has length 16 [2022-07-20 06:02:58,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:02:58,222 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 332 transitions. [2022-07-20 06:02:58,222 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) [2022-07-20 06:02:58,222 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 332 transitions. [2022-07-20 06:02:58,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-20 06:02:58,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:02:58,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:02:58,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-20 06:02:58,223 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)] === [2022-07-20 06:02:58,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:02:58,224 INFO L85 PathProgramCache]: Analyzing trace with hash -226556129, now seen corresponding path program 1 times [2022-07-20 06:02:58,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:02:58,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234022265] [2022-07-20 06:02:58,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:02:58,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:02:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:02:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:02:58,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:02:58,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234022265] [2022-07-20 06:02:58,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234022265] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:02:58,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:02:58,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 06:02:58,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524583299] [2022-07-20 06:02:58,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:02:58,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 06:02:58,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:02:58,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 06:02:58,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-20 06:02:58,347 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) [2022-07-20 06:02:58,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:02:58,687 INFO L93 Difference]: Finished difference Result 299 states and 342 transitions. [2022-07-20 06:02:58,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 06:02:58,688 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 [2022-07-20 06:02:58,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:02:58,689 INFO L225 Difference]: With dead ends: 299 [2022-07-20 06:02:58,689 INFO L226 Difference]: Without dead ends: 299 [2022-07-20 06:02:58,689 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 [2022-07-20 06:02:58,689 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 80 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-07-20 06:02:58,690 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] [2022-07-20 06:02:58,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-07-20 06:02:58,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 289. [2022-07-20 06:02:58,701 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) [2022-07-20 06:02:58,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 330 transitions. [2022-07-20 06:02:58,702 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 330 transitions. Word has length 16 [2022-07-20 06:02:58,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:02:58,702 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 330 transitions. [2022-07-20 06:02:58,702 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) [2022-07-20 06:02:58,702 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 330 transitions. [2022-07-20 06:02:58,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-20 06:02:58,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:02:58,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:02:58,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-20 06:02:58,703 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)] === [2022-07-20 06:02:58,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:02:58,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1322891007, now seen corresponding path program 1 times [2022-07-20 06:02:58,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:02:58,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823135288] [2022-07-20 06:02:58,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:02:58,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:02:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:02:58,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:02:58,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:02:58,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823135288] [2022-07-20 06:02:58,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823135288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:02:58,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:02:58,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 06:02:58,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803402451] [2022-07-20 06:02:58,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:02:58,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 06:02:58,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:02:58,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 06:02:58,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 06:02:58,736 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) [2022-07-20 06:02:58,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:02:58,880 INFO L93 Difference]: Finished difference Result 288 states and 329 transitions. [2022-07-20 06:02:58,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 06:02:58,880 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 [2022-07-20 06:02:58,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:02:58,882 INFO L225 Difference]: With dead ends: 288 [2022-07-20 06:02:58,882 INFO L226 Difference]: Without dead ends: 288 [2022-07-20 06:02:58,882 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 [2022-07-20 06:02:58,883 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 [2022-07-20 06:02:58,883 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] [2022-07-20 06:02:58,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-07-20 06:02:58,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2022-07-20 06:02:58,888 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) [2022-07-20 06:02:58,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 329 transitions. [2022-07-20 06:02:58,889 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 329 transitions. Word has length 18 [2022-07-20 06:02:58,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:02:58,889 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 329 transitions. [2022-07-20 06:02:58,889 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) [2022-07-20 06:02:58,890 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 329 transitions. [2022-07-20 06:02:58,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-20 06:02:58,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:02:58,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:02:58,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-20 06:02:58,891 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)] === [2022-07-20 06:02:58,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:02:58,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1322891008, now seen corresponding path program 1 times [2022-07-20 06:02:58,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:02:58,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173062575] [2022-07-20 06:02:58,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:02:58,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:02:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:02:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:02:58,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:02:58,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173062575] [2022-07-20 06:02:58,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173062575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:02:58,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:02:58,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 06:02:58,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620097998] [2022-07-20 06:02:58,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:02:58,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:02:58,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:02:58,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:02:58,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:02:58,936 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) [2022-07-20 06:02:59,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:02:59,065 INFO L93 Difference]: Finished difference Result 287 states and 328 transitions. [2022-07-20 06:02:59,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 06:02:59,065 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 [2022-07-20 06:02:59,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:02:59,070 INFO L225 Difference]: With dead ends: 287 [2022-07-20 06:02:59,071 INFO L226 Difference]: Without dead ends: 287 [2022-07-20 06:02:59,071 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 [2022-07-20 06:02:59,073 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 [2022-07-20 06:02:59,074 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] [2022-07-20 06:02:59,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-07-20 06:02:59,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-07-20 06:02:59,081 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) [2022-07-20 06:02:59,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 328 transitions. [2022-07-20 06:02:59,083 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 328 transitions. Word has length 18 [2022-07-20 06:02:59,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:02:59,083 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 328 transitions. [2022-07-20 06:02:59,083 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) [2022-07-20 06:02:59,083 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 328 transitions. [2022-07-20 06:02:59,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-20 06:02:59,084 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:02:59,084 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] [2022-07-20 06:02:59,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-20 06:02:59,085 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)] === [2022-07-20 06:02:59,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:02:59,085 INFO L85 PathProgramCache]: Analyzing trace with hash -12061856, now seen corresponding path program 1 times [2022-07-20 06:02:59,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:02:59,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906885928] [2022-07-20 06:02:59,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:02:59,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:02:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:02:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:02:59,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:02:59,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906885928] [2022-07-20 06:02:59,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906885928] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:02:59,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:02:59,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-20 06:02:59,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128629410] [2022-07-20 06:02:59,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:02:59,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-20 06:02:59,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:02:59,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-20 06:02:59,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-20 06:02:59,239 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) [2022-07-20 06:02:59,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:02:59,563 INFO L93 Difference]: Finished difference Result 326 states and 372 transitions. [2022-07-20 06:02:59,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 06:02:59,563 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 [2022-07-20 06:02:59,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:02:59,565 INFO L225 Difference]: With dead ends: 326 [2022-07-20 06:02:59,565 INFO L226 Difference]: Without dead ends: 326 [2022-07-20 06:02:59,565 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 [2022-07-20 06:02:59,565 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 [2022-07-20 06:02:59,565 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] [2022-07-20 06:02:59,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-07-20 06:02:59,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 307. [2022-07-20 06:02:59,570 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) [2022-07-20 06:02:59,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 356 transitions. [2022-07-20 06:02:59,571 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 356 transitions. Word has length 20 [2022-07-20 06:02:59,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:02:59,571 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 356 transitions. [2022-07-20 06:02:59,571 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) [2022-07-20 06:02:59,572 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 356 transitions. [2022-07-20 06:02:59,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-20 06:02:59,572 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:02:59,572 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] [2022-07-20 06:02:59,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-20 06:02:59,573 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)] === [2022-07-20 06:02:59,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:02:59,573 INFO L85 PathProgramCache]: Analyzing trace with hash 551710607, now seen corresponding path program 1 times [2022-07-20 06:02:59,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:02:59,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092770004] [2022-07-20 06:02:59,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:02:59,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:02:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:02:59,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-20 06:02:59,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:02:59,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092770004] [2022-07-20 06:02:59,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092770004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:02:59,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:02:59,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 06:02:59,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335381545] [2022-07-20 06:02:59,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:02:59,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:02:59,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:02:59,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:02:59,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:02:59,609 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) [2022-07-20 06:02:59,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:02:59,684 INFO L93 Difference]: Finished difference Result 305 states and 354 transitions. [2022-07-20 06:02:59,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:02:59,684 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 [2022-07-20 06:02:59,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:02:59,685 INFO L225 Difference]: With dead ends: 305 [2022-07-20 06:02:59,686 INFO L226 Difference]: Without dead ends: 305 [2022-07-20 06:02:59,686 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 [2022-07-20 06:02:59,686 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 [2022-07-20 06:02:59,686 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] [2022-07-20 06:02:59,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-07-20 06:02:59,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2022-07-20 06:02:59,690 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) [2022-07-20 06:02:59,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 354 transitions. [2022-07-20 06:02:59,692 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 354 transitions. Word has length 27 [2022-07-20 06:02:59,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:02:59,692 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 354 transitions. [2022-07-20 06:02:59,692 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) [2022-07-20 06:02:59,692 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 354 transitions. [2022-07-20 06:02:59,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-20 06:02:59,692 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:02:59,693 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] [2022-07-20 06:02:59,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-20 06:02:59,693 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)] === [2022-07-20 06:02:59,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:02:59,693 INFO L85 PathProgramCache]: Analyzing trace with hash 67060467, now seen corresponding path program 1 times [2022-07-20 06:02:59,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:02:59,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419995454] [2022-07-20 06:02:59,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:02:59,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:02:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:02:59,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-20 06:02:59,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:02:59,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419995454] [2022-07-20 06:02:59,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419995454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:02:59,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:02:59,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 06:02:59,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177811904] [2022-07-20 06:02:59,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:02:59,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:02:59,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:02:59,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:02:59,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:02:59,756 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) [2022-07-20 06:03:00,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:03:00,018 INFO L93 Difference]: Finished difference Result 304 states and 353 transitions. [2022-07-20 06:03:00,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 06:03:00,019 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 [2022-07-20 06:03:00,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:03:00,020 INFO L225 Difference]: With dead ends: 304 [2022-07-20 06:03:00,020 INFO L226 Difference]: Without dead ends: 304 [2022-07-20 06:03:00,020 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 [2022-07-20 06:03:00,020 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, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:03:00,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 873 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:03:00,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-07-20 06:03:00,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 303. [2022-07-20 06:03:00,025 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) [2022-07-20 06:03:00,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 352 transitions. [2022-07-20 06:03:00,026 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 352 transitions. Word has length 31 [2022-07-20 06:03:00,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:03:00,027 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 352 transitions. [2022-07-20 06:03:00,027 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) [2022-07-20 06:03:00,027 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 352 transitions. [2022-07-20 06:03:00,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-20 06:03:00,027 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:03:00,027 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] [2022-07-20 06:03:00,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-20 06:03:00,028 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)] === [2022-07-20 06:03:00,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:03:00,028 INFO L85 PathProgramCache]: Analyzing trace with hash 67060466, now seen corresponding path program 1 times [2022-07-20 06:03:00,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:03:00,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787031902] [2022-07-20 06:03:00,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:03:00,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:03:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:00,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-20 06:03:00,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:03:00,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787031902] [2022-07-20 06:03:00,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787031902] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:03:00,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:03:00,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 06:03:00,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78295904] [2022-07-20 06:03:00,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:03:00,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 06:03:00,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:03:00,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 06:03:00,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-20 06:03:00,080 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) [2022-07-20 06:03:00,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:03:00,261 INFO L93 Difference]: Finished difference Result 301 states and 350 transitions. [2022-07-20 06:03:00,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 06:03:00,261 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 [2022-07-20 06:03:00,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:03:00,262 INFO L225 Difference]: With dead ends: 301 [2022-07-20 06:03:00,262 INFO L226 Difference]: Without dead ends: 301 [2022-07-20 06:03:00,263 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 [2022-07-20 06:03:00,263 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 [2022-07-20 06:03:00,263 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] [2022-07-20 06:03:00,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-07-20 06:03:00,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2022-07-20 06:03:00,267 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) [2022-07-20 06:03:00,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 350 transitions. [2022-07-20 06:03:00,268 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 350 transitions. Word has length 31 [2022-07-20 06:03:00,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:03:00,268 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 350 transitions. [2022-07-20 06:03:00,268 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) [2022-07-20 06:03:00,268 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 350 transitions. [2022-07-20 06:03:00,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-20 06:03:00,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:03:00,269 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] [2022-07-20 06:03:00,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-20 06:03:00,269 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)] === [2022-07-20 06:03:00,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:03:00,269 INFO L85 PathProgramCache]: Analyzing trace with hash 20600531, now seen corresponding path program 1 times [2022-07-20 06:03:00,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:03:00,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684739470] [2022-07-20 06:03:00,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:03:00,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:03:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:00,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-20 06:03:00,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:03:00,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684739470] [2022-07-20 06:03:00,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684739470] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:03:00,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:03:00,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 06:03:00,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673721798] [2022-07-20 06:03:00,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:03:00,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 06:03:00,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:03:00,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 06:03:00,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 06:03:00,307 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) [2022-07-20 06:03:00,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:03:00,450 INFO L93 Difference]: Finished difference Result 300 states and 349 transitions. [2022-07-20 06:03:00,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 06:03:00,450 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 [2022-07-20 06:03:00,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:03:00,451 INFO L225 Difference]: With dead ends: 300 [2022-07-20 06:03:00,452 INFO L226 Difference]: Without dead ends: 300 [2022-07-20 06:03:00,452 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 [2022-07-20 06:03:00,452 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 [2022-07-20 06:03:00,453 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] [2022-07-20 06:03:00,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-07-20 06:03:00,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2022-07-20 06:03:00,457 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) [2022-07-20 06:03:00,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 349 transitions. [2022-07-20 06:03:00,458 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 349 transitions. Word has length 33 [2022-07-20 06:03:00,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:03:00,458 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 349 transitions. [2022-07-20 06:03:00,459 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) [2022-07-20 06:03:00,459 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 349 transitions. [2022-07-20 06:03:00,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-20 06:03:00,466 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:03:00,466 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] [2022-07-20 06:03:00,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-20 06:03:00,467 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)] === [2022-07-20 06:03:00,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:03:00,467 INFO L85 PathProgramCache]: Analyzing trace with hash 20600532, now seen corresponding path program 1 times [2022-07-20 06:03:00,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:03:00,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705856958] [2022-07-20 06:03:00,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:03:00,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:03:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:00,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-20 06:03:00,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:03:00,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705856958] [2022-07-20 06:03:00,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705856958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:03:00,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:03:00,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 06:03:00,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405258419] [2022-07-20 06:03:00,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:03:00,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:03:00,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:03:00,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:03:00,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:03:00,513 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) [2022-07-20 06:03:00,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:03:00,654 INFO L93 Difference]: Finished difference Result 299 states and 348 transitions. [2022-07-20 06:03:00,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 06:03:00,654 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 [2022-07-20 06:03:00,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:03:00,656 INFO L225 Difference]: With dead ends: 299 [2022-07-20 06:03:00,656 INFO L226 Difference]: Without dead ends: 299 [2022-07-20 06:03:00,656 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 [2022-07-20 06:03:00,657 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 [2022-07-20 06:03:00,657 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] [2022-07-20 06:03:00,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-07-20 06:03:00,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-07-20 06:03:00,661 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) [2022-07-20 06:03:00,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 348 transitions. [2022-07-20 06:03:00,662 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 348 transitions. Word has length 33 [2022-07-20 06:03:00,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:03:00,663 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 348 transitions. [2022-07-20 06:03:00,663 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) [2022-07-20 06:03:00,663 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 348 transitions. [2022-07-20 06:03:00,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-20 06:03:00,663 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:03:00,664 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] [2022-07-20 06:03:00,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-20 06:03:00,664 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)] === [2022-07-20 06:03:00,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:03:00,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1677723852, now seen corresponding path program 1 times [2022-07-20 06:03:00,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:03:00,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459955266] [2022-07-20 06:03:00,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:03:00,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:03:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:00,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-20 06:03:00,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:03:00,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459955266] [2022-07-20 06:03:00,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459955266] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:03:00,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:03:00,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 06:03:00,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90586114] [2022-07-20 06:03:00,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:03:00,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 06:03:00,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:03:00,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 06:03:00,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-20 06:03:00,776 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) [2022-07-20 06:03:01,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:03:01,049 INFO L93 Difference]: Finished difference Result 313 states and 363 transitions. [2022-07-20 06:03:01,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 06:03:01,049 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 [2022-07-20 06:03:01,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:03:01,051 INFO L225 Difference]: With dead ends: 313 [2022-07-20 06:03:01,051 INFO L226 Difference]: Without dead ends: 313 [2022-07-20 06:03:01,051 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 [2022-07-20 06:03:01,052 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 [2022-07-20 06:03:01,052 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] [2022-07-20 06:03:01,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-07-20 06:03:01,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 312. [2022-07-20 06:03:01,058 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) [2022-07-20 06:03:01,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 362 transitions. [2022-07-20 06:03:01,060 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 362 transitions. Word has length 35 [2022-07-20 06:03:01,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:03:01,060 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 362 transitions. [2022-07-20 06:03:01,060 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) [2022-07-20 06:03:01,060 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 362 transitions. [2022-07-20 06:03:01,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-20 06:03:01,061 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:03:01,061 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] [2022-07-20 06:03:01,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-20 06:03:01,061 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)] === [2022-07-20 06:03:01,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:03:01,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1451018694, now seen corresponding path program 1 times [2022-07-20 06:03:01,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:03:01,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863028749] [2022-07-20 06:03:01,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:03:01,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:03:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:01,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-20 06:03:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-20 06:03:01,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:03:01,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863028749] [2022-07-20 06:03:01,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863028749] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 06:03:01,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659285454] [2022-07-20 06:03:01,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:03:01,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 06:03:01,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 06:03:01,332 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) [2022-07-20 06:03:01,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-20 06:03:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:01,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 61 conjunts are in the unsatisfiable core [2022-07-20 06:03:01,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:03:01,563 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 [2022-07-20 06:03:01,626 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 [2022-07-20 06:03:01,724 INFO L356 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2022-07-20 06:03:01,725 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 [2022-07-20 06:03:01,765 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 [2022-07-20 06:03:01,782 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 [2022-07-20 06:03:01,815 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 [2022-07-20 06:03:01,844 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-20 06:03:01,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 06:03:01,874 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 [2022-07-20 06:03:02,052 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-20 06:03:02,052 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 [2022-07-20 06:03:02,083 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:03:02,083 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 [2022-07-20 06:03:02,097 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:03:02,097 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 [2022-07-20 06:03:02,101 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 [2022-07-20 06:03:03,162 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:03:03,162 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 221 treesize of output 287 [2022-07-20 06:03:03,821 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 3 not checked. [2022-07-20 06:03:03,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659285454] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 06:03:03,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 06:03:03,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 13] total 34 [2022-07-20 06:03:03,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136531673] [2022-07-20 06:03:03,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 06:03:03,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-20 06:03:03,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:03:03,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-20 06:03:03,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1018, Unknown=4, NotChecked=64, Total=1190 [2022-07-20 06:03:03,823 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) [2022-07-20 06:03:05,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:03:05,148 INFO L93 Difference]: Finished difference Result 334 states and 386 transitions. [2022-07-20 06:03:05,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-20 06:03:05,149 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 [2022-07-20 06:03:05,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:03:05,150 INFO L225 Difference]: With dead ends: 334 [2022-07-20 06:03:05,150 INFO L226 Difference]: Without dead ends: 334 [2022-07-20 06:03:05,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 84 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=457, Invalid=2195, Unknown=4, NotChecked=100, Total=2756 [2022-07-20 06:03:05,151 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 239 mSDsluCounter, 2870 mSDsCounter, 0 mSdLazyCounter, 1730 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 06:03:05,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 3109 Invalid, 3016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1730 Invalid, 0 Unknown, 1226 Unchecked, 0.7s Time] [2022-07-20 06:03:05,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-07-20 06:03:05,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 328. [2022-07-20 06:03:05,155 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) [2022-07-20 06:03:05,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 379 transitions. [2022-07-20 06:03:05,156 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 379 transitions. Word has length 51 [2022-07-20 06:03:05,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:03:05,157 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 379 transitions. [2022-07-20 06:03:05,157 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) [2022-07-20 06:03:05,157 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 379 transitions. [2022-07-20 06:03:05,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-20 06:03:05,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:03:05,158 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] [2022-07-20 06:03:05,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-20 06:03:05,368 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 [2022-07-20 06:03:05,368 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)] === [2022-07-20 06:03:05,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:03:05,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1451018695, now seen corresponding path program 1 times [2022-07-20 06:03:05,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:03:05,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026536146] [2022-07-20 06:03:05,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:03:05,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:03:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:05,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-20 06:03:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-20 06:03:05,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:03:05,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026536146] [2022-07-20 06:03:05,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026536146] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 06:03:05,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520764738] [2022-07-20 06:03:05,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:03:05,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 06:03:05,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 06:03:05,641 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) [2022-07-20 06:03:05,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-20 06:03:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:05,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 82 conjunts are in the unsatisfiable core [2022-07-20 06:03:05,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:03:05,827 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 [2022-07-20 06:03:06,025 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 [2022-07-20 06:03:06,029 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 [2022-07-20 06:03:06,179 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-07-20 06:03:06,179 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 [2022-07-20 06:03:06,184 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 [2022-07-20 06:03:06,223 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 [2022-07-20 06:03:06,228 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 [2022-07-20 06:03:06,238 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 [2022-07-20 06:03:06,242 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 [2022-07-20 06:03:06,277 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 [2022-07-20 06:03:06,279 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 [2022-07-20 06:03:06,326 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-20 06:03:06,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 06:03:06,431 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 [2022-07-20 06:03:06,753 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-20 06:03:06,754 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 1 [2022-07-20 06:03:06,758 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-20 06:03:06,758 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 1 [2022-07-20 06:03:06,803 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:03:06,803 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 [2022-07-20 06:03:06,820 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:03:06,820 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 34 treesize of output 37 [2022-07-20 06:03:06,822 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 11 treesize of output 9 [2022-07-20 06:03:06,833 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:03:06,833 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 [2022-07-20 06:03:06,838 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:03:06,838 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 [2022-07-20 06:03:06,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 06:03:06,842 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-07-20 06:03:06,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 06:03:06,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-07-20 06:03:12,929 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-20 06:03:23,173 WARN L233 SmtUtils]: Spent 10.15s on a formula simplification. DAG size of input: 40 DAG size of output: 37 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-20 06:03:26,388 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 70 treesize of output 66 [2022-07-20 06:03:26,506 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 06:03:26,507 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 [2022-07-20 06:03:26,569 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 3 not checked. [2022-07-20 06:03:26,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520764738] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 06:03:26,570 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 06:03:26,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 14] total 40 [2022-07-20 06:03:26,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163119471] [2022-07-20 06:03:26,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 06:03:26,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-07-20 06:03:26,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:03:26,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-07-20 06:03:26,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1451, Unknown=4, NotChecked=76, Total=1640 [2022-07-20 06:03:26,571 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) [2022-07-20 06:03:33,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:03:33,608 INFO L93 Difference]: Finished difference Result 342 states and 397 transitions. [2022-07-20 06:03:33,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-20 06:03:33,609 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 [2022-07-20 06:03:33,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:03:33,610 INFO L225 Difference]: With dead ends: 342 [2022-07-20 06:03:33,610 INFO L226 Difference]: Without dead ends: 342 [2022-07-20 06:03:33,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 81 SyntacticMatches, 8 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 25.8s TimeCoverageRelationStatistics Valid=683, Invalid=3739, Unknown=4, NotChecked=130, Total=4556 [2022-07-20 06:03:33,612 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 360 mSDsluCounter, 3138 mSDsCounter, 0 mSdLazyCounter, 2573 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:03:33,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 3375 Invalid, 4044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 2573 Invalid, 0 Unknown, 1321 Unchecked, 1.2s Time] [2022-07-20 06:03:33,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-07-20 06:03:33,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 327. [2022-07-20 06:03:33,622 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) [2022-07-20 06:03:33,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 376 transitions. [2022-07-20 06:03:33,624 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 376 transitions. Word has length 51 [2022-07-20 06:03:33,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:03:33,625 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 376 transitions. [2022-07-20 06:03:33,625 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) [2022-07-20 06:03:33,625 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 376 transitions. [2022-07-20 06:03:33,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-20 06:03:33,626 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:03:33,627 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] [2022-07-20 06:03:33,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-20 06:03:33,844 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 [2022-07-20 06:03:33,844 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)] === [2022-07-20 06:03:33,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:03:33,845 INFO L85 PathProgramCache]: Analyzing trace with hash -470108245, now seen corresponding path program 1 times [2022-07-20 06:03:33,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:03:33,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533607965] [2022-07-20 06:03:33,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:03:33,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:03:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:33,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-20 06:03:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:33,947 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-20 06:03:33,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:03:33,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533607965] [2022-07-20 06:03:33,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533607965] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 06:03:33,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730017766] [2022-07-20 06:03:33,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:03:33,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 06:03:33,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 06:03:33,962 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) [2022-07-20 06:03:33,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-20 06:03:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:34,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 06:03:34,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:03:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-20 06:03:34,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:03:34,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730017766] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:03:34,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 06:03:34,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2022-07-20 06:03:34,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305912525] [2022-07-20 06:03:34,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:03:34,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 06:03:34,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:03:34,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 06:03:34,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:03:34,116 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) [2022-07-20 06:03:34,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:03:34,143 INFO L93 Difference]: Finished difference Result 313 states and 349 transitions. [2022-07-20 06:03:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 06:03:34,143 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 [2022-07-20 06:03:34,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:03:34,145 INFO L225 Difference]: With dead ends: 313 [2022-07-20 06:03:34,145 INFO L226 Difference]: Without dead ends: 313 [2022-07-20 06:03:34,145 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 [2022-07-20 06:03:34,145 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 [2022-07-20 06:03:34,146 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] [2022-07-20 06:03:34,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-07-20 06:03:34,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2022-07-20 06:03:34,149 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) [2022-07-20 06:03:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 349 transitions. [2022-07-20 06:03:34,151 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 349 transitions. Word has length 54 [2022-07-20 06:03:34,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:03:34,151 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 349 transitions. [2022-07-20 06:03:34,151 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) [2022-07-20 06:03:34,151 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 349 transitions. [2022-07-20 06:03:34,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-20 06:03:34,152 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:03:34,152 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] [2022-07-20 06:03:34,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-20 06:03:34,369 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 [2022-07-20 06:03:34,370 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)] === [2022-07-20 06:03:34,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:03:34,370 INFO L85 PathProgramCache]: Analyzing trace with hash -996489836, now seen corresponding path program 1 times [2022-07-20 06:03:34,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:03:34,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925947742] [2022-07-20 06:03:34,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:03:34,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:03:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:34,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 06:03:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:34,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-20 06:03:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:34,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 06:03:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:34,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-20 06:03:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:34,771 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-20 06:03:34,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:03:34,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925947742] [2022-07-20 06:03:34,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925947742] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 06:03:34,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837011890] [2022-07-20 06:03:34,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:03:34,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 06:03:34,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 06:03:34,774 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) [2022-07-20 06:03:34,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-20 06:03:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:34,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-20 06:03:34,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:03:35,035 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 [2022-07-20 06:03:35,076 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 [2022-07-20 06:03:35,348 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 [2022-07-20 06:03:35,364 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 [2022-07-20 06:03:35,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 06:03:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 5 not checked. [2022-07-20 06:03:35,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 06:03:35,735 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 [2022-07-20 06:03:35,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837011890] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 06:03:35,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 06:03:35,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 32 [2022-07-20 06:03:35,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550691078] [2022-07-20 06:03:35,737 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 06:03:35,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-20 06:03:35,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:03:35,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-20 06:03:35,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=792, Unknown=9, NotChecked=174, Total=1056 [2022-07-20 06:03:35,739 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) [2022-07-20 06:03:36,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:03:36,956 INFO L93 Difference]: Finished difference Result 333 states and 373 transitions. [2022-07-20 06:03:36,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-20 06:03:36,956 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 [2022-07-20 06:03:36,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:03:36,957 INFO L225 Difference]: With dead ends: 333 [2022-07-20 06:03:36,957 INFO L226 Difference]: Without dead ends: 329 [2022-07-20 06:03:36,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=197, Invalid=1862, Unknown=23, NotChecked=270, Total=2352 [2022-07-20 06:03:36,959 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 [2022-07-20 06:03:36,959 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] [2022-07-20 06:03:36,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-07-20 06:03:36,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 313. [2022-07-20 06:03:36,968 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) [2022-07-20 06:03:36,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 348 transitions. [2022-07-20 06:03:36,971 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 348 transitions. Word has length 64 [2022-07-20 06:03:36,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:03:36,971 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 348 transitions. [2022-07-20 06:03:36,972 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) [2022-07-20 06:03:36,972 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 348 transitions. [2022-07-20 06:03:36,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-20 06:03:36,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:03:36,973 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] [2022-07-20 06:03:36,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-20 06:03:37,187 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 [2022-07-20 06:03:37,187 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)] === [2022-07-20 06:03:37,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:03:37,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2033150353, now seen corresponding path program 1 times [2022-07-20 06:03:37,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:03:37,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428917332] [2022-07-20 06:03:37,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:03:37,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:03:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:37,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 06:03:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:37,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-20 06:03:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:38,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 06:03:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:38,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-20 06:03:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:38,869 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-20 06:03:38,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:03:38,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428917332] [2022-07-20 06:03:38,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428917332] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 06:03:38,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057188026] [2022-07-20 06:03:38,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:03:38,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 06:03:38,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 06:03:38,871 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) [2022-07-20 06:03:38,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-20 06:03:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:39,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 75 conjunts are in the unsatisfiable core [2022-07-20 06:03:39,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:03:39,124 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 [2022-07-20 06:03:39,286 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 [2022-07-20 06:03:39,390 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-07-20 06:03:39,390 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 [2022-07-20 06:03:39,393 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 [2022-07-20 06:03:39,792 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 [2022-07-20 06:03:40,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 06:03:40,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 06:03:40,048 INFO L356 Elim1Store]: treesize reduction 100, result has 23.1 percent of original size [2022-07-20 06:03:40,049 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 [2022-07-20 06:03:40,058 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:03:40,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 06:03:40,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057188026] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 06:03:40,408 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 06:03:40,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 19] total 43 [2022-07-20 06:03:40,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902751278] [2022-07-20 06:03:40,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 06:03:40,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-20 06:03:40,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:03:40,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-20 06:03:40,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1794, Unknown=16, NotChecked=0, Total=1980 [2022-07-20 06:03:40,410 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) [2022-07-20 06:03:43,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:03:43,342 INFO L93 Difference]: Finished difference Result 347 states and 386 transitions. [2022-07-20 06:03:43,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-20 06:03:43,342 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 [2022-07-20 06:03:43,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:03:43,343 INFO L225 Difference]: With dead ends: 347 [2022-07-20 06:03:43,343 INFO L226 Difference]: Without dead ends: 347 [2022-07-20 06:03:43,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=350, Invalid=3773, Unknown=37, NotChecked=0, Total=4160 [2022-07-20 06:03:43,345 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 257 mSDsluCounter, 2709 mSDsCounter, 0 mSdLazyCounter, 3300 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.7s IncrementalHoareTripleChecker+Time [2022-07-20 06:03:43,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 2927 Invalid, 4020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 3300 Invalid, 0 Unknown, 643 Unchecked, 1.7s Time] [2022-07-20 06:03:43,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-07-20 06:03:43,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 324. [2022-07-20 06:03:43,349 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) [2022-07-20 06:03:43,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 363 transitions. [2022-07-20 06:03:43,350 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 363 transitions. Word has length 65 [2022-07-20 06:03:43,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:03:43,350 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 363 transitions. [2022-07-20 06:03:43,351 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) [2022-07-20 06:03:43,351 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 363 transitions. [2022-07-20 06:03:43,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-20 06:03:43,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:03:43,351 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] [2022-07-20 06:03:43,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-20 06:03:43,567 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 [2022-07-20 06:03:43,567 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)] === [2022-07-20 06:03:43,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:03:43,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2033150354, now seen corresponding path program 1 times [2022-07-20 06:03:43,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:03:43,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270035121] [2022-07-20 06:03:43,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:03:43,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:03:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:43,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 06:03:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:43,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-20 06:03:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:55,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 06:03:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:55,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-20 06:03:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-20 06:03:56,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:03:56,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270035121] [2022-07-20 06:03:56,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270035121] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 06:03:56,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982286541] [2022-07-20 06:03:56,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:03:56,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 06:03:56,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 06:03:56,709 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) [2022-07-20 06:03:56,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-20 06:03:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:03:56,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 93 conjunts are in the unsatisfiable core [2022-07-20 06:03:56,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:03:57,058 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 [2022-07-20 06:03:57,061 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 [2022-07-20 06:03:57,371 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 [2022-07-20 06:03:57,521 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 [2022-07-20 06:03:57,523 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 [2022-07-20 06:03:58,114 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 [2022-07-20 06:04:16,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 06:04:16,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 06:04:16,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 06:04:16,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 06:04:16,388 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-07-20 06:04:16,388 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 [2022-07-20 06:04:16,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 06:04:16,412 INFO L356 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-07-20 06:04:16,413 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 [2022-07-20 06:04:16,468 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:04:16,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 06:04:17,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982286541] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 06:04:17,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 06:04:17,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24] total 47 [2022-07-20 06:04:17,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353884762] [2022-07-20 06:04:17,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 06:04:17,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-07-20 06:04:17,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:04:17,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-07-20 06:04:17,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2212, Unknown=37, NotChecked=0, Total=2450 [2022-07-20 06:04:17,005 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) [2022-07-20 06:05:06,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:05:06,671 INFO L93 Difference]: Finished difference Result 335 states and 376 transitions. [2022-07-20 06:05:06,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-20 06:05:06,672 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 [2022-07-20 06:05:06,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:05:06,673 INFO L225 Difference]: With dead ends: 335 [2022-07-20 06:05:06,673 INFO L226 Difference]: Without dead ends: 335 [2022-07-20 06:05:06,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 57 SyntacticMatches, 4 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 67.7s TimeCoverageRelationStatistics Valid=393, Invalid=4221, Unknown=78, NotChecked=0, Total=4692 [2022-07-20 06:05:06,675 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 226 mSDsluCounter, 2155 mSDsCounter, 0 mSdLazyCounter, 2838 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 2371 SdHoareTripleChecker+Invalid, 3956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1055 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-20 06:05:06,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 2371 Invalid, 3956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2838 Invalid, 0 Unknown, 1055 Unchecked, 1.8s Time] [2022-07-20 06:05:06,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-07-20 06:05:06,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 324. [2022-07-20 06:05:06,688 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) [2022-07-20 06:05:06,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 361 transitions. [2022-07-20 06:05:06,689 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 361 transitions. Word has length 65 [2022-07-20 06:05:06,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:05:06,690 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 361 transitions. [2022-07-20 06:05:06,690 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) [2022-07-20 06:05:06,690 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 361 transitions. [2022-07-20 06:05:06,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-20 06:05:06,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:05:06,691 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] [2022-07-20 06:05:06,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-20 06:05:06,910 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 [2022-07-20 06:05:06,910 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)] === [2022-07-20 06:05:06,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:05:06,911 INFO L85 PathProgramCache]: Analyzing trace with hash -352630062, now seen corresponding path program 1 times [2022-07-20 06:05:06,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:05:06,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840510662] [2022-07-20 06:05:06,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:05:06,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:05:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:05:07,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 06:05:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:05:07,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-20 06:05:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat