./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 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/AutomizerReach.xml -i ../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 19:27:19,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 19:27:19,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 19:27:19,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 19:27:19,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 19:27:19,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 19:27:19,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 19:27:19,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 19:27:19,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 19:27:19,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 19:27:19,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 19:27:19,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 19:27:19,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 19:27:19,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 19:27:19,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 19:27:19,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 19:27:19,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 19:27:19,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 19:27:19,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 19:27:19,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 19:27:19,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 19:27:19,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 19:27:19,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 19:27:19,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 19:27:19,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 19:27:19,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 19:27:19,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 19:27:19,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 19:27:19,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 19:27:19,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 19:27:19,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 19:27:19,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 19:27:19,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 19:27:19,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 19:27:19,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 19:27:19,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 19:27:19,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 19:27:19,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 19:27:19,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 19:27:19,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 19:27:19,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 19:27:19,957 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 19:27:19,986 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 19:27:19,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 19:27:19,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 19:27:19,990 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 19:27:19,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 19:27:19,991 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 19:27:19,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 19:27:19,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 19:27:19,992 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 19:27:19,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 19:27:19,993 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 19:27:19,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 19:27:19,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 19:27:19,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 19:27:19,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 19:27:19,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 19:27:19,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 19:27:19,995 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 19:27:19,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 19:27:19,995 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 19:27:19,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 19:27:19,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 19:27:19,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 19:27:19,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 19:27:19,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 19:27:19,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 19:27:19,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 19:27:19,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 19:27:19,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 19:27:19,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 19:27:19,997 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 19:27:19,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 19:27:19,997 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 19:27:19,998 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 19:27:19,998 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 19:27:19,998 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 [2023-02-15 19:27:20,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 19:27:20,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 19:27:20,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 19:27:20,261 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 19:27:20,262 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 19:27:20,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2023-02-15 19:27:21,359 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 19:27:21,586 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 19:27:21,587 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2023-02-15 19:27:21,597 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a0617f17/9afab059298e40f4a5f02f4ae6995eac/FLAGb1ece8d95 [2023-02-15 19:27:21,615 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a0617f17/9afab059298e40f4a5f02f4ae6995eac [2023-02-15 19:27:21,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 19:27:21,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 19:27:21,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 19:27:21,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 19:27:21,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 19:27:21,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:27:21" (1/1) ... [2023-02-15 19:27:21,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e50d5ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:21, skipping insertion in model container [2023-02-15 19:27:21,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:27:21" (1/1) ... [2023-02-15 19:27:21,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 19:27:21,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 19:27:21,999 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i[22634,22647] [2023-02-15 19:27:22,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 19:27:22,040 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 19:27:22,081 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i[22634,22647] [2023-02-15 19:27:22,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 19:27:22,142 INFO L208 MainTranslator]: Completed translation [2023-02-15 19:27:22,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:22 WrapperNode [2023-02-15 19:27:22,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 19:27:22,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 19:27:22,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 19:27:22,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 19:27:22,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:22" (1/1) ... [2023-02-15 19:27:22,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:22" (1/1) ... [2023-02-15 19:27:22,211 INFO L138 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 228 [2023-02-15 19:27:22,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 19:27:22,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 19:27:22,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 19:27:22,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 19:27:22,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:22" (1/1) ... [2023-02-15 19:27:22,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:22" (1/1) ... [2023-02-15 19:27:22,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:22" (1/1) ... [2023-02-15 19:27:22,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:22" (1/1) ... [2023-02-15 19:27:22,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:22" (1/1) ... [2023-02-15 19:27:22,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:22" (1/1) ... [2023-02-15 19:27:22,264 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:22" (1/1) ... [2023-02-15 19:27:22,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:22" (1/1) ... [2023-02-15 19:27:22,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 19:27:22,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 19:27:22,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 19:27:22,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 19:27:22,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:22" (1/1) ... [2023-02-15 19:27:22,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 19:27:22,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:27:22,298 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 19:27:22,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 19:27:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-02-15 19:27:22,329 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-02-15 19:27:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2023-02-15 19:27:22,329 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2023-02-15 19:27:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 19:27:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 19:27:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2023-02-15 19:27:22,330 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2023-02-15 19:27:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 19:27:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-15 19:27:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-02-15 19:27:22,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-02-15 19:27:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-15 19:27:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 19:27:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-15 19:27:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2023-02-15 19:27:22,331 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2023-02-15 19:27:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2023-02-15 19:27:22,331 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2023-02-15 19:27:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 19:27:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 19:27:22,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 19:27:22,466 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 19:27:22,468 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 19:27:22,828 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 19:27:22,835 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 19:27:22,835 INFO L300 CfgBuilder]: Removed 38 assume(true) statements. [2023-02-15 19:27:22,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:27:22 BoogieIcfgContainer [2023-02-15 19:27:22,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 19:27:22,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 19:27:22,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 19:27:22,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 19:27:22,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 07:27:21" (1/3) ... [2023-02-15 19:27:22,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52fe434a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:27:22, skipping insertion in model container [2023-02-15 19:27:22,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:22" (2/3) ... [2023-02-15 19:27:22,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52fe434a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:27:22, skipping insertion in model container [2023-02-15 19:27:22,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:27:22" (3/3) ... [2023-02-15 19:27:22,844 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2023-02-15 19:27:22,859 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 19:27:22,860 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 19:27:22,915 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 19:27:22,922 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4eb7b720, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 19:27:22,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 19:27:22,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 96 states have (on average 1.7083333333333333) internal successors, (164), 116 states have internal predecessors, (164), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-02-15 19:27:22,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-15 19:27:22,936 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:27:22,937 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-02-15 19:27:22,938 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:27:22,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:27:22,944 INFO L85 PathProgramCache]: Analyzing trace with hash 760908611, now seen corresponding path program 1 times [2023-02-15 19:27:22,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:27:22,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26397028] [2023-02-15 19:27:22,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:27:22,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:27:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:23,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:23,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:27:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:23,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 19:27:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:23,365 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 19:27:23,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:27:23,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26397028] [2023-02-15 19:27:23,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26397028] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:27:23,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:27:23,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:27:23,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396405900] [2023-02-15 19:27:23,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:27:23,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:27:23,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:27:23,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:27:23,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:27:23,407 INFO L87 Difference]: Start difference. First operand has 128 states, 96 states have (on average 1.7083333333333333) internal successors, (164), 116 states have internal predecessors, (164), 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 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 19:27:23,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:27:23,672 INFO L93 Difference]: Finished difference Result 251 states and 429 transitions. [2023-02-15 19:27:23,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:27:23,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2023-02-15 19:27:23,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:27:23,682 INFO L225 Difference]: With dead ends: 251 [2023-02-15 19:27:23,689 INFO L226 Difference]: Without dead ends: 120 [2023-02-15 19:27:23,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:27:23,699 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 38 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 19:27:23,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 181 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 19:27:23,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-02-15 19:27:23,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-02-15 19:27:23,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 90 states have (on average 1.2777777777777777) internal successors, (115), 108 states have internal predecessors, (115), 24 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-15 19:27:23,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2023-02-15 19:27:23,756 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 37 [2023-02-15 19:27:23,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:27:23,757 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2023-02-15 19:27:23,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 19:27:23,758 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2023-02-15 19:27:23,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-15 19:27:23,760 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:27:23,761 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-02-15 19:27:23,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 19:27:23,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:27:23,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:27:23,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1675514385, now seen corresponding path program 1 times [2023-02-15 19:27:23,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:27:23,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279776427] [2023-02-15 19:27:23,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:27:23,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:27:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:24,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:24,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:27:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:24,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 19:27:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:24,469 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 19:27:24,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:27:24,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279776427] [2023-02-15 19:27:24,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279776427] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:27:24,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596158285] [2023-02-15 19:27:24,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:27:24,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:27:24,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:27:24,474 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:27:24,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 19:27:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:24,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 19:27:24,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:27:24,801 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 19:27:24,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:27:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 19:27:25,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596158285] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:27:25,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 19:27:25,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 12 [2023-02-15 19:27:25,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48127902] [2023-02-15 19:27:25,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 19:27:25,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 19:27:25,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:27:25,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 19:27:25,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-02-15 19:27:25,028 INFO L87 Difference]: Start difference. First operand 120 states and 149 transitions. Second operand has 12 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-15 19:27:25,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:27:25,502 INFO L93 Difference]: Finished difference Result 250 states and 324 transitions. [2023-02-15 19:27:25,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 19:27:25,503 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 38 [2023-02-15 19:27:25,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:27:25,505 INFO L225 Difference]: With dead ends: 250 [2023-02-15 19:27:25,505 INFO L226 Difference]: Without dead ends: 133 [2023-02-15 19:27:25,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-02-15 19:27:25,507 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 52 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 19:27:25,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1037 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 19:27:25,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-02-15 19:27:25,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-02-15 19:27:25,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 98 states have (on average 1.2653061224489797) internal successors, (124), 116 states have internal predecessors, (124), 27 states have call successors, (27), 8 states have call predecessors, (27), 7 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2023-02-15 19:27:25,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 164 transitions. [2023-02-15 19:27:25,522 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 164 transitions. Word has length 38 [2023-02-15 19:27:25,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:27:25,523 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 164 transitions. [2023-02-15 19:27:25,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-15 19:27:25,523 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 164 transitions. [2023-02-15 19:27:25,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-02-15 19:27:25,526 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:27:25,526 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2023-02-15 19:27:25,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 19:27:25,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:27:25,734 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:27:25,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:27:25,734 INFO L85 PathProgramCache]: Analyzing trace with hash 800158065, now seen corresponding path program 1 times [2023-02-15 19:27:25,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:27:25,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280593181] [2023-02-15 19:27:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:27:25,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:27:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:26,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:27,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:27:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:27,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:27,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-15 19:27:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:27,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-15 19:27:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:27,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:27:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:27,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 19:27:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:27,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-02-15 19:27:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:27,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:28,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-15 19:27:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:28,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-15 19:27:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:28,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:27:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:28,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 19:27:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:28,439 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 27 proven. 23 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-02-15 19:27:28,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:27:28,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280593181] [2023-02-15 19:27:28,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280593181] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:27:28,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496193408] [2023-02-15 19:27:28,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:27:28,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:27:28,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:27:28,442 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:27:28,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 19:27:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:28,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-15 19:27:28,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:27:28,872 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-02-15 19:27:28,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-02-15 19:27:28,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:27:28,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-02-15 19:27:28,956 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-02-15 19:27:28,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 34 [2023-02-15 19:27:28,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2023-02-15 19:27:29,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-02-15 19:27:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-02-15 19:27:29,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:27:29,481 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:27:29,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 107 [2023-02-15 19:27:29,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 116 [2023-02-15 19:27:29,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 114 [2023-02-15 19:27:29,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-02-15 19:27:29,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-02-15 19:27:29,594 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:27:29,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 218 treesize of output 215 [2023-02-15 19:27:29,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 242 [2023-02-15 19:27:29,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 242 treesize of output 238 [2023-02-15 19:27:29,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-02-15 19:27:29,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-02-15 19:27:29,789 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-02-15 19:27:29,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496193408] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:27:29,790 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 19:27:29,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16, 15] total 27 [2023-02-15 19:27:29,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981629017] [2023-02-15 19:27:29,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 19:27:29,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-15 19:27:29,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:27:29,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-15 19:27:29,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2023-02-15 19:27:29,793 INFO L87 Difference]: Start difference. First operand 133 states and 164 transitions. Second operand has 27 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 11 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2023-02-15 19:27:31,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:27:31,288 INFO L93 Difference]: Finished difference Result 330 states and 410 transitions. [2023-02-15 19:27:31,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-15 19:27:31,291 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 11 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) Word has length 110 [2023-02-15 19:27:31,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:27:31,293 INFO L225 Difference]: With dead ends: 330 [2023-02-15 19:27:31,295 INFO L226 Difference]: Without dead ends: 201 [2023-02-15 19:27:31,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 237 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=175, Invalid=1895, Unknown=0, NotChecked=0, Total=2070 [2023-02-15 19:27:31,297 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 264 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:27:31,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1793 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1832 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-15 19:27:31,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-02-15 19:27:31,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 166. [2023-02-15 19:27:31,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 126 states have (on average 1.253968253968254) internal successors, (158), 144 states have internal predecessors, (158), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (17), 13 states have call predecessors, (17), 15 states have call successors, (17) [2023-02-15 19:27:31,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 204 transitions. [2023-02-15 19:27:31,323 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 204 transitions. Word has length 110 [2023-02-15 19:27:31,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:27:31,324 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 204 transitions. [2023-02-15 19:27:31,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 11 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2023-02-15 19:27:31,325 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 204 transitions. [2023-02-15 19:27:31,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-02-15 19:27:31,330 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:27:31,331 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2023-02-15 19:27:31,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 19:27:31,537 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,SelfDestructingSolverStorable2 [2023-02-15 19:27:31,537 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:27:31,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:27:31,538 INFO L85 PathProgramCache]: Analyzing trace with hash 614553281, now seen corresponding path program 1 times [2023-02-15 19:27:31,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:27:31,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73742947] [2023-02-15 19:27:31,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:27:31,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:27:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:32,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:32,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:27:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:32,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:33,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-15 19:27:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:33,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-15 19:27:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:33,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:27:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:33,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 19:27:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:33,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-02-15 19:27:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:33,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:33,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-15 19:27:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:33,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-15 19:27:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:33,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:27:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:33,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 19:27:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:33,534 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 15 proven. 23 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-02-15 19:27:33,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:27:33,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73742947] [2023-02-15 19:27:33,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73742947] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:27:33,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084701063] [2023-02-15 19:27:33,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:27:33,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:27:33,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:27:33,537 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:27:33,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 19:27:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:33,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 57 conjunts are in the unsatisfiable core [2023-02-15 19:27:33,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:27:34,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:27:34,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-02-15 19:27:34,197 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2702 (Array Int Int)) (|##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base| Int)) (and (= |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~next~0#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base| v_ArrVal_2702) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|)) (< |##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base| |c_#StackHeapBarrier|))) is different from true [2023-02-15 19:27:34,205 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2702 (Array Int Int)) (|##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base| Int)) (and (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base| v_ArrVal_2702) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|)) (< |##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base| |c_#StackHeapBarrier|))) is different from true [2023-02-15 19:27:34,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:27:34,231 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 80 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 5 not checked. [2023-02-15 19:27:34,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:27:35,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084701063] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:27:35,202 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:27:35,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 24 [2023-02-15 19:27:35,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366766765] [2023-02-15 19:27:35,203 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:27:35,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-15 19:27:35,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:27:35,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-15 19:27:35,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=447, Unknown=9, NotChecked=86, Total=600 [2023-02-15 19:27:35,205 INFO L87 Difference]: Start difference. First operand 166 states and 204 transitions. Second operand has 24 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 8 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (17), 5 states have call predecessors, (17), 8 states have call successors, (17) [2023-02-15 19:27:40,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:27:40,919 INFO L93 Difference]: Finished difference Result 342 states and 424 transitions. [2023-02-15 19:27:40,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-15 19:27:40,919 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 8 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (17), 5 states have call predecessors, (17), 8 states have call successors, (17) Word has length 113 [2023-02-15 19:27:40,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:27:40,921 INFO L225 Difference]: With dead ends: 342 [2023-02-15 19:27:40,921 INFO L226 Difference]: Without dead ends: 180 [2023-02-15 19:27:40,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=234, Invalid=1650, Unknown=16, NotChecked=170, Total=2070 [2023-02-15 19:27:40,923 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 112 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 28 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 1816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 333 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-15 19:27:40,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1261 Invalid, 1816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1451 Invalid, 4 Unknown, 333 Unchecked, 0.9s Time] [2023-02-15 19:27:40,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-02-15 19:27:40,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 176. [2023-02-15 19:27:40,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 135 states have (on average 1.237037037037037) internal successors, (167), 153 states have internal predecessors, (167), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-15 19:27:40,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 211 transitions. [2023-02-15 19:27:40,939 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 211 transitions. Word has length 113 [2023-02-15 19:27:40,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:27:40,939 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 211 transitions. [2023-02-15 19:27:40,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 8 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (17), 5 states have call predecessors, (17), 8 states have call successors, (17) [2023-02-15 19:27:40,939 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 211 transitions. [2023-02-15 19:27:40,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-02-15 19:27:40,941 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:27:40,941 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2023-02-15 19:27:40,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 19:27:41,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:27:41,148 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:27:41,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:27:41,149 INFO L85 PathProgramCache]: Analyzing trace with hash 522299907, now seen corresponding path program 1 times [2023-02-15 19:27:41,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:27:41,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733350290] [2023-02-15 19:27:41,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:27:41,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:27:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:45,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:48,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:27:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:48,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:48,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-15 19:27:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:49,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-15 19:27:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:49,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:27:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:49,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 19:27:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:49,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-02-15 19:27:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:50,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:51,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-15 19:27:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:52,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-15 19:27:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat