./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3dbbec33 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-1.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 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 10:53:46,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 10:53:46,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 10:53:46,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 10:53:46,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 10:53:46,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 10:53:46,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 10:53:46,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 10:53:46,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 10:53:46,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 10:53:46,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 10:53:46,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 10:53:46,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 10:53:46,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 10:53:46,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 10:53:46,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 10:53:46,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 10:53:46,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 10:53:46,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 10:53:46,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 10:53:46,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 10:53:46,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 10:53:46,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 10:53:46,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 10:53:46,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 10:53:46,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 10:53:46,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 10:53:46,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 10:53:46,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 10:53:46,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 10:53:46,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 10:53:46,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 10:53:46,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 10:53:46,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 10:53:46,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 10:53:46,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 10:53:46,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 10:53:46,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 10:53:46,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 10:53:46,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 10:53:46,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 10:53:46,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 10:53:46,150 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 10:53:46,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 10:53:46,151 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 10:53:46,151 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 10:53:46,152 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 10:53:46,152 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 10:53:46,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 10:53:46,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 10:53:46,153 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 10:53:46,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 10:53:46,153 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 10:53:46,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 10:53:46,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 10:53:46,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 10:53:46,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 10:53:46,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 10:53:46,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 10:53:46,155 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 10:53:46,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 10:53:46,155 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 10:53:46,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 10:53:46,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 10:53:46,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 10:53:46,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 10:53:46,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 10:53:46,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 10:53:46,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 10:53:46,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 10:53:46,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 10:53:46,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 10:53:46,158 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 10:53:46,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 10:53:46,158 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 10:53:46,158 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 10:53:46,159 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 10:53:46,159 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 [2023-02-14 10:53:46,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 10:53:46,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 10:53:46,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 10:53:46,367 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 10:53:46,367 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 10:53:46,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2023-02-14 10:53:47,515 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 10:53:47,791 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 10:53:47,792 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2023-02-14 10:53:47,809 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e8328d18/3af2c9563be941dabc1667fa91de5c0d/FLAGfcca53b4e [2023-02-14 10:53:47,820 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e8328d18/3af2c9563be941dabc1667fa91de5c0d [2023-02-14 10:53:47,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 10:53:47,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 10:53:47,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 10:53:47,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 10:53:47,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 10:53:47,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:53:47" (1/1) ... [2023-02-14 10:53:47,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a1b4b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:53:47, skipping insertion in model container [2023-02-14 10:53:47,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:53:47" (1/1) ... [2023-02-14 10:53:47,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 10:53:47,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 10:53:48,071 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i[22634,22647] [2023-02-14 10:53:48,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 10:53:48,147 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 10:53:48,179 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i[22634,22647] [2023-02-14 10:53:48,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 10:53:48,243 INFO L208 MainTranslator]: Completed translation [2023-02-14 10:53:48,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:53:48 WrapperNode [2023-02-14 10:53:48,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 10:53:48,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 10:53:48,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 10:53:48,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 10:53:48,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:53:48" (1/1) ... [2023-02-14 10:53:48,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:53:48" (1/1) ... [2023-02-14 10:53:48,290 INFO L138 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 228 [2023-02-14 10:53:48,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 10:53:48,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 10:53:48,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 10:53:48,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 10:53:48,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:53:48" (1/1) ... [2023-02-14 10:53:48,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:53:48" (1/1) ... [2023-02-14 10:53:48,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:53:48" (1/1) ... [2023-02-14 10:53:48,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:53:48" (1/1) ... [2023-02-14 10:53:48,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:53:48" (1/1) ... [2023-02-14 10:53:48,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:53:48" (1/1) ... [2023-02-14 10:53:48,352 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:53:48" (1/1) ... [2023-02-14 10:53:48,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:53:48" (1/1) ... [2023-02-14 10:53:48,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 10:53:48,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 10:53:48,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 10:53:48,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 10:53:48,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:53:48" (1/1) ... [2023-02-14 10:53:48,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 10:53:48,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 10:53:48,396 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) [2023-02-14 10:53:48,401 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 [2023-02-14 10:53:48,433 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-02-14 10:53:48,433 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-02-14 10:53:48,433 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2023-02-14 10:53:48,433 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2023-02-14 10:53:48,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-14 10:53:48,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 10:53:48,434 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2023-02-14 10:53:48,434 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2023-02-14 10:53:48,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-14 10:53:48,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-14 10:53:48,435 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-02-14 10:53:48,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-02-14 10:53:48,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-14 10:53:48,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 10:53:48,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-14 10:53:48,436 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2023-02-14 10:53:48,436 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2023-02-14 10:53:48,436 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2023-02-14 10:53:48,436 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2023-02-14 10:53:48,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 10:53:48,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 10:53:48,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 10:53:48,623 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 10:53:48,625 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 10:53:49,048 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 10:53:49,057 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 10:53:49,057 INFO L300 CfgBuilder]: Removed 38 assume(true) statements. [2023-02-14 10:53:49,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:53:49 BoogieIcfgContainer [2023-02-14 10:53:49,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 10:53:49,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 10:53:49,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 10:53:49,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 10:53:49,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 10:53:47" (1/3) ... [2023-02-14 10:53:49,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@791c6584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:53:49, skipping insertion in model container [2023-02-14 10:53:49,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:53:48" (2/3) ... [2023-02-14 10:53:49,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@791c6584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:53:49, skipping insertion in model container [2023-02-14 10:53:49,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:53:49" (3/3) ... [2023-02-14 10:53:49,068 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2023-02-14 10:53:49,084 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 10:53:49,085 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 10:53:49,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 10:53:49,143 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;@23c1b3fc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 10:53:49,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 10:53:49,147 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) [2023-02-14 10:53:49,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-14 10:53:49,153 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:53:49,153 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] [2023-02-14 10:53:49,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:53:49,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:53:49,158 INFO L85 PathProgramCache]: Analyzing trace with hash 760908611, now seen corresponding path program 1 times [2023-02-14 10:53:49,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:53:49,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355052908] [2023-02-14 10:53:49,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:53:49,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:53:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:49,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:53:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:49,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 10:53:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:49,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-14 10:53:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:49,511 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-14 10:53:49,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:53:49,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355052908] [2023-02-14 10:53:49,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355052908] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 10:53:49,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 10:53:49,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 10:53:49,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048683803] [2023-02-14 10:53:49,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 10:53:49,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 10:53:49,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:53:49,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 10:53:49,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 10:53:49,542 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) [2023-02-14 10:53:49,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:53:49,699 INFO L93 Difference]: Finished difference Result 251 states and 429 transitions. [2023-02-14 10:53:49,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 10:53:49,701 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 [2023-02-14 10:53:49,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:53:49,710 INFO L225 Difference]: With dead ends: 251 [2023-02-14 10:53:49,711 INFO L226 Difference]: Without dead ends: 120 [2023-02-14 10:53:49,715 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 [2023-02-14 10:53:49,718 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, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 10:53:49,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 181 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 10:53:49,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-02-14 10:53:49,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-02-14 10:53:49,768 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) [2023-02-14 10:53:49,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2023-02-14 10:53:49,777 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 37 [2023-02-14 10:53:49,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:53:49,778 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2023-02-14 10:53:49,778 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) [2023-02-14 10:53:49,779 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2023-02-14 10:53:49,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-14 10:53:49,781 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:53:49,781 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] [2023-02-14 10:53:49,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 10:53:49,782 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:53:49,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:53:49,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1675514385, now seen corresponding path program 1 times [2023-02-14 10:53:49,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:53:49,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443219091] [2023-02-14 10:53:49,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:53:49,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:53:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:50,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:53:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:50,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 10:53:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:50,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-14 10:53:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 10:53:50,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:53:50,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443219091] [2023-02-14 10:53:50,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443219091] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 10:53:50,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427762514] [2023-02-14 10:53:50,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:53:50,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 10:53:50,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 10:53:50,565 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) [2023-02-14 10:53:50,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 10:53:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:50,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-14 10:53:50,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 10:53:50,931 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 10:53:50,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 10:53:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 10:53:51,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427762514] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 10:53:51,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 10:53:51,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 12 [2023-02-14 10:53:51,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233179655] [2023-02-14 10:53:51,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 10:53:51,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-14 10:53:51,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:53:51,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-14 10:53:51,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-02-14 10:53:51,181 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) [2023-02-14 10:53:51,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:53:51,628 INFO L93 Difference]: Finished difference Result 250 states and 324 transitions. [2023-02-14 10:53:51,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-14 10:53:51,629 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 [2023-02-14 10:53:51,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:53:51,631 INFO L225 Difference]: With dead ends: 250 [2023-02-14 10:53:51,631 INFO L226 Difference]: Without dead ends: 133 [2023-02-14 10:53:51,633 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 [2023-02-14 10:53:51,633 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 [2023-02-14 10:53:51,634 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] [2023-02-14 10:53:51,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-02-14 10:53:51,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-02-14 10:53:51,648 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) [2023-02-14 10:53:51,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 164 transitions. [2023-02-14 10:53:51,649 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 164 transitions. Word has length 38 [2023-02-14 10:53:51,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:53:51,649 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 164 transitions. [2023-02-14 10:53:51,649 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) [2023-02-14 10:53:51,650 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 164 transitions. [2023-02-14 10:53:51,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-02-14 10:53:51,652 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:53:51,652 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] [2023-02-14 10:53:51,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 10:53:51,858 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 [2023-02-14 10:53:51,858 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:53:51,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:53:51,859 INFO L85 PathProgramCache]: Analyzing trace with hash 800158065, now seen corresponding path program 1 times [2023-02-14 10:53:51,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:53:51,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335159144] [2023-02-14 10:53:51,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:53:51,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:53:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:52,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:53:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:53,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 10:53:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:53,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:53:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:53,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 10:53:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:53,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-14 10:53:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:54,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 10:53:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:54,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-14 10:53:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:54,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-02-14 10:53:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:54,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:53:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:54,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 10:53:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:54,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-14 10:53:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:54,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 10:53:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:54,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-14 10:53:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 27 proven. 23 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-02-14 10:53:54,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:53:54,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335159144] [2023-02-14 10:53:54,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335159144] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 10:53:54,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744908157] [2023-02-14 10:53:54,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:53:54,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 10:53:54,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 10:53:54,809 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) [2023-02-14 10:53:54,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 10:53:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:55,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-14 10:53:55,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 10:53:55,312 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-02-14 10:53:55,313 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 [2023-02-14 10:53:55,320 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 [2023-02-14 10:53:55,330 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 [2023-02-14 10:53:55,361 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 10:53:55,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 9 [2023-02-14 10:53:55,366 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 9 treesize of output 7 [2023-02-14 10:53:55,439 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 [2023-02-14 10:53:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-02-14 10:53:55,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 10:53:55,833 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 10:53:55,833 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 [2023-02-14 10:53:55,839 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 [2023-02-14 10:53:55,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 114 [2023-02-14 10:53:55,886 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 [2023-02-14 10:53:55,894 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 [2023-02-14 10:53:55,912 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 10:53:55,913 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 [2023-02-14 10:53:55,921 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 [2023-02-14 10:53:55,928 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 [2023-02-14 10:53:55,998 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 [2023-02-14 10:53:56,011 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 [2023-02-14 10:53:56,132 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-02-14 10:53:56,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744908157] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 10:53:56,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 10:53:56,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16, 15] total 27 [2023-02-14 10:53:56,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741234642] [2023-02-14 10:53:56,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 10:53:56,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-14 10:53:56,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:53:56,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-14 10:53:56,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2023-02-14 10:53:56,138 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) [2023-02-14 10:53:57,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:53:57,730 INFO L93 Difference]: Finished difference Result 330 states and 410 transitions. [2023-02-14 10:53:57,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-14 10:53:57,731 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 [2023-02-14 10:53:57,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:53:57,737 INFO L225 Difference]: With dead ends: 330 [2023-02-14 10:53:57,737 INFO L226 Difference]: Without dead ends: 201 [2023-02-14 10:53:57,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=175, Invalid=1895, Unknown=0, NotChecked=0, Total=2070 [2023-02-14 10:53:57,739 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 264 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2023-02-14 10:53:57,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1793 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1832 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-14 10:53:57,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-02-14 10:53:57,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 166. [2023-02-14 10:53:57,759 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) [2023-02-14 10:53:57,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 204 transitions. [2023-02-14 10:53:57,761 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 204 transitions. Word has length 110 [2023-02-14 10:53:57,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:53:57,762 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 204 transitions. [2023-02-14 10:53:57,762 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) [2023-02-14 10:53:57,762 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 204 transitions. [2023-02-14 10:53:57,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-02-14 10:53:57,766 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:53:57,767 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] [2023-02-14 10:53:57,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 10:53:57,967 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 [2023-02-14 10:53:57,968 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:53:57,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:53:57,968 INFO L85 PathProgramCache]: Analyzing trace with hash 614553281, now seen corresponding path program 1 times [2023-02-14 10:53:57,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:53:57,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299093142] [2023-02-14 10:53:57,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:53:57,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:53:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:58,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:53:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:59,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 10:53:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:53:59,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:53:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:00,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 10:54:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:00,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-14 10:54:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:00,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 10:54:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:00,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-14 10:54:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:00,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-02-14 10:54:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:00,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:54:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:00,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 10:54:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:00,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-14 10:54:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:00,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 10:54:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:00,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-14 10:54:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:00,431 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 15 proven. 23 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-02-14 10:54:00,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 10:54:00,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299093142] [2023-02-14 10:54:00,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299093142] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 10:54:00,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485977276] [2023-02-14 10:54:00,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:54:00,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 10:54:00,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 10:54:00,435 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) [2023-02-14 10:54:00,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 10:54:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:00,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 55 conjunts are in the unsatisfiable core [2023-02-14 10:54:00,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 10:54:00,924 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 [2023-02-14 10:54:00,978 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 [2023-02-14 10:54:01,122 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2858 (Array Int Int)) (|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int)) (and (< |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_2858) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~next~0#1.base|))) is different from true [2023-02-14 10:54:01,135 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2858 (Array Int Int)) (|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int)) (and (< |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_2858) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|) 0))) is different from true [2023-02-14 10:54:01,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 10:54:01,170 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 80 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 5 not checked. [2023-02-14 10:54:01,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 10:54:02,152 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_139| Int) (v_ArrVal_2898 (Array Int Int))) (or (not (< |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_139| |c_#StackHeapBarrier|)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_139| v_ArrVal_2898) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|) 0)))) is different from false [2023-02-14 10:54:02,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485977276] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 10:54:02,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 10:54:02,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 24 [2023-02-14 10:54:02,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971959517] [2023-02-14 10:54:02,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 10:54:02,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-14 10:54:02,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 10:54:02,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-14 10:54:02,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=414, Unknown=3, NotChecked=126, Total=600 [2023-02-14 10:54:02,156 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) [2023-02-14 10:54:30,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 10:54:30,374 INFO L93 Difference]: Finished difference Result 342 states and 424 transitions. [2023-02-14 10:54:30,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-14 10:54:30,375 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 [2023-02-14 10:54:30,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 10:54:30,376 INFO L225 Difference]: With dead ends: 342 [2023-02-14 10:54:30,377 INFO L226 Difference]: Without dead ends: 180 [2023-02-14 10:54:30,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=233, Invalid=1563, Unknown=22, NotChecked=252, Total=2070 [2023-02-14 10:54:30,379 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 112 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 1816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 333 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-14 10:54:30,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1261 Invalid, 1816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1455 Invalid, 0 Unknown, 333 Unchecked, 1.0s Time] [2023-02-14 10:54:30,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-02-14 10:54:30,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 176. [2023-02-14 10:54:30,396 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) [2023-02-14 10:54:30,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 211 transitions. [2023-02-14 10:54:30,397 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 211 transitions. Word has length 113 [2023-02-14 10:54:30,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 10:54:30,398 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 211 transitions. [2023-02-14 10:54:30,398 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) [2023-02-14 10:54:30,398 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 211 transitions. [2023-02-14 10:54:30,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-02-14 10:54:30,400 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 10:54:30,400 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] [2023-02-14 10:54:30,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 10:54:30,608 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 [2023-02-14 10:54:30,608 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 10:54:30,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 10:54:30,609 INFO L85 PathProgramCache]: Analyzing trace with hash 522299907, now seen corresponding path program 1 times [2023-02-14 10:54:30,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 10:54:30,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92184255] [2023-02-14 10:54:30,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 10:54:30,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 10:54:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:34,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:54:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:37,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 10:54:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:37,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 10:54:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:38,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 10:54:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 10:54:38,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-14 10:54:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat